---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: co-cernes.com
report_url: "https://crawlinx.com/audit/co-cernes.com"
crawl_id: 20260810T000819-c996ebad
health_score: 61
generated_at: 2026-08-26T03:51:05Z
total_pages: 50
html_pages: 49
indexable_pages: 47
errors: 4
warnings: 232
notices: 498
---

# SEO audit: co-cernes.com

**Health score: 61/100** — needs attention

> Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/co-cernes.com

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 50 |
| HTML pages | 49 |
| Indexable | 47 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 2 |
| Avg response time | 1120 ms |
| Errors / Warnings / Notices | 4 / 232 / 498 |
| Status codes | 48×200, 2×404 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Links | 94 | 2 | 4 | 37 |
| Crawlability | 95 | 2 | 1 | 6 |
| Performance | 72 | 0 | 46 | 171 |
| Agent Readiness | 77 | 0 | 38 | 57 |
| Images | 78 | 0 | 37 | 42 |
| Content | 82 | 0 | 30 | 23 |
| Headings | 85 | 0 | 25 | 0 |
| Meta Description | 87 | 0 | 22 | 19 |
| Duplicate | 92 | 0 | 14 | 2 |
| Structured Data | 93 | 0 | 11 | 47 |
| Indexability | 99 | 0 | 2 | 0 |
| Canonical | 99 | 0 | 1 | 0 |
| Titles | 99 | 0 | 1 | 1 |
| Cache | 100 | 0 | 0 | 1 |
| Security | 100 | 0 | 0 | 52 |
| Social | 100 | 0 | 0 | 36 |
| URL | 100 | 0 | 0 | 4 |

## Issues

### Errors (4)

#### Broken internal link (target 4xx/5xx)

- Rule: `links.broken_internal` · Category: Links · Occurrences: 2

- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — https://co-cernes.com/livraison-et-retours/ (HTTP 404)
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — https://co-cernes.com/mentions-legales/ (HTTP 404)

#### Client error (4xx) response

- Rule: `status.4xx` · Category: Crawlability · Occurrences: 2

- [https://co-cernes.com/livraison-et-retours/](https://co-cernes.com/livraison-et-retours/) — HTTP 404
- [https://co-cernes.com/mentions-legales/](https://co-cernes.com/mentions-legales/) — HTTP 404

### Warnings (232)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 38

- [https://co-cernes.com/](https://co-cernes.com/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 1 button/link(s) with no text or aria-label — an agent can't target them

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd)

#### Lorem-ipsum placeholder text in a live page

- Rule: `content.lorem_ipsum` · Category: Content · Occurrences: 1

- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — the page body contains "lorem ipsum" placeholder text — replace it with real content or noindex the page until it's finished

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 29

- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — 21 words
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 93 words
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 93 words
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 94 words
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 93 words
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 94 words
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — 20 words
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 94 words
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 93 words
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 78 words
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 78 words
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 104 words
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 93 words
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 93 words
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — 34 words
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — 32 words
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 95 words
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — 34 words
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — 34 words
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 93 words
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 166 words
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 94 words
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 78 words
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 93 words
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 81 words
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — 30 words
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — 37 words
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 95 words
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 146 words

#### Duplicate page content

- Rule: `duplicate.content` · Category: Duplicate · Occurrences: 3

- [https://co-cernes.com/](https://co-cernes.com/) — content shared by 3 pages: https://co-cernes.com/remerciements/, https://co-cernes.com/us_media_category/documents-etude-cern/
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — content shared by 3 pages: https://co-cernes.com/, https://co-cernes.com/us_media_category/documents-etude-cern/
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — content shared by 3 pages: https://co-cernes.com/, https://co-cernes.com/remerciements/

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 11

- [https://co-cernes.com/](https://co-cernes.com/) — title shared by 3 pages: https://co-cernes.com/remerciements/, https://co-cernes.com/us_media_category/documents-etude-cern/
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — title shared by 2 pages: https://co-cernes.com/adherer/5321/
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — title shared by 2 pages: https://co-cernes.com/adherer/
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — title shared by 3 pages: https://co-cernes.com/panier/, https://co-cernes.com/commander/
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — title shared by 3 pages: https://co-cernes.com/panier/, https://co-cernes.com/boutique/
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — title shared by 3 pages: https://co-cernes.com/mon-compte/commandes/, https://co-cernes.com/mon-compte/
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — title shared by 3 pages: https://co-cernes.com/mon-compte/commandes/, https://co-cernes.com/login/
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — title shared by 3 pages: https://co-cernes.com/login/, https://co-cernes.com/mon-compte/
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — title shared by 3 pages: https://co-cernes.com/commander/, https://co-cernes.com/boutique/
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — title shared by 3 pages: https://co-cernes.com/, https://co-cernes.com/us_media_category/documents-etude-cern/
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — title shared by 3 pages: https://co-cernes.com/, https://co-cernes.com/remerciements/

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 25

- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions)
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd)
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/)
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/)
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/)
- [https://co-cernes.com/association/](https://co-cernes.com/association/)
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/)
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/)
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/)
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/)
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/)
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/)
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/)
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/)
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/)
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/)
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/)
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/)
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/)
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/)
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/)
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/)
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/)
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/)
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 37

- [https://co-cernes.com/](https://co-cernes.com/) — 1 of 158 images missing alt
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 1 of 2 images missing alt
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 1 of 2 images missing alt
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 1 of 2 images missing alt
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 1 of 19 images missing alt
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — 1 of 19 images missing alt
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 1 of 19 images missing alt
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 1 of 21 images missing alt
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 1 of 2 images missing alt
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 1 of 3 images missing alt
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 1 of 2 images missing alt
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 1 of 2 images missing alt
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 1 of 9 images missing alt
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 1 of 2 images missing alt
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 1 of 2 images missing alt
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 3 of 9 images missing alt
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 1 of 2 images missing alt
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 1 of 2 images missing alt
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 1 of 2 images missing alt
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 1 of 11 images missing alt
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 1 of 2 images missing alt
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 1 of 6 images missing alt
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — 1 of 2 images missing alt
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 1 of 2 images missing alt
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 1 of 2 images missing alt
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 1 of 7 images missing alt
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 1 of 2 images missing alt
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 2 of 8 images missing alt
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 1 of 8 images missing alt
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 1 of 2 images missing alt
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 1 of 2 images missing alt
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 1 of 15 images missing alt
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 1 of 2 images missing alt
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 1 of 158 images missing alt
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 1 of 2 images missing alt
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 1 of 8 images missing alt
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 1 of 158 images missing alt

#### Page is noindex

- Rule: `index.noindex` · Category: Indexability · Occurrences: 2

- [https://co-cernes.com/livraison-et-retours/](https://co-cernes.com/livraison-et-retours/) — meta/X-Robots: meta=noindex, follow
- [https://co-cernes.com/mentions-legales/](https://co-cernes.com/mentions-legales/) — meta/X-Robots: meta=noindex, follow

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 4

- [https://co-cernes.com/](https://co-cernes.com/) — https://co-cernes.com/adherer/5321/ → https://co-cernes.com/adherer/
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — https://co-cernes.com/panier/ → https://co-cernes.com/boutique/
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — https://co-cernes.com/adherer/5321/ → https://co-cernes.com/adherer/
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — https://co-cernes.com/adherer/5321/ → https://co-cernes.com/adherer/

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 22

- [https://co-cernes.com/](https://co-cernes.com/)
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd)
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/)
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/)
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/)
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/)
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/)
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/)
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/)
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/)
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/)
- [https://co-cernes.com/login/](https://co-cernes.com/login/)
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/)
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/)
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/)
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/)
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/)
- [https://co-cernes.com/register/](https://co-cernes.com/register/)
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/)
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/)
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/)
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/)

#### Render-blocking script in <head> (no defer/async)

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 46

- [https://co-cernes.com/](https://co-cernes.com/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)

#### Redirect chain (multiple hops)

- Rule: `redirect.chain` · Category: Crawlability · Occurrences: 1

- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 2 hops ending at https://co-cernes.com/boutique/

#### BreadcrumbList present but structurally incomplete

- Rule: `schema.breadcrumb_incomplete` · Category: Structured Data · Occurrences: 3

- [https://co-cernes.com/](https://co-cernes.com/) — a BreadcrumbList is present but structurally incomplete — missing required itemListElement. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — a BreadcrumbList is present but structurally incomplete — missing required itemListElement. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — a BreadcrumbList is present but structurally incomplete — missing required itemListElement. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.

#### Schema describes content not visible on the page

- Rule: `schema.hidden_content` · Category: Structured Data · Occurrences: 8

- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — a schema name/headline ("Axel Chauney") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — a schema name/headline ("PIERRE-FRANçOIS - NOVEMBRE 2023 - MATELAS - CO-CERNés") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — a schema name/headline ("Login - CO-CERNés") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — a schema name/headline ("Maintenance - CO-CERNés") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — a schema name/headline ("Login - CO-CERNés") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — a schema name/headline ("Login - CO-CERNés") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — a schema name/headline ("Register - CO-CERNés") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — a schema name/headline ("Axel Chauney") does not appear in the page's visible text — Google's policies prohibit marking up content not visible to readers. This is a heuristic (a static-HTML substring check): JS-rendered or abbreviated names can be false positives, so verify before removing.

#### Title likely truncated in SERP (too wide)

- Rule: `title.too_long` · Category: Titles · Occurrences: 1

- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 82 chars, ~806px (limit ~580px)

### Notices (498)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 19

- [https://co-cernes.com/](https://co-cernes.com/) — h4 follows h2 — skips h3
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — h5 follows h3 — skips h4
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — h5 follows h3 — skips h4
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — h5 follows h3 — skips h4
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — h5 follows h3 — skips h4
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — h5 follows h2 — skips h3
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — h5 follows h3 — skips h4
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — h4 follows h2 — skips h3
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — h3 follows h1 — skips h2
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — h5 follows h3 — skips h4
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — h5 follows h3 — skips h4
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — h4 follows h2 — skips h3
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — h5 follows h3 — skips h4
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — h5 follows h3 — skips h4
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — h5 follows h3 — skips h4
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — h5 follows h3 — skips h4
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — h4 follows h2 — skips h3
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — h5 follows h3 — skips h4
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — h4 follows h2 — skips h3

#### No llms.txt for AI agents

- Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1

- [https://co-cernes.com/](https://co-cernes.com/) — no llms.txt found at the site root — add one so AI agents get a curated site summary

#### No main landmark for AI agents

- Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 37

- [https://co-cernes.com/](https://co-cernes.com/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — add a <main> element (or role=main) around the primary content
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — add a <main> element (or role=main) around the primary content

#### Page served uncached (no-store/private or CDN bypass)

- Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — Cache-Control: no-cache, must-revalidate, max-age=0, no-store, private

#### Low text-to-HTML ratio

- Rule: `content.low_ratio` · Category: Content · Occurrences: 22

- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — 0.2%
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 3.1%
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — 0.1%
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 3.6%
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 1.6%
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 3.9%
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 1.6%
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 2.0%
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 4.4%
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 3.1%
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — 0.7%
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — 0.2%
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — 0.7%
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — 0.7%
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 3.2%
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 3.3%
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 3.5%
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 1.6%
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 1.6%
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — 0.6%
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — 0.7%
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 2.6%

#### Title tag and meta description are identical

- Rule: `content.title_meta_same` · Category: Meta Description · Occurrences: 1

- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — the meta description is identical to the <title> — write a distinct description to control the SERP snippet

#### Duplicate meta description across pages

- Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 2

- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — meta description shared by 2 pages: https://co-cernes.com/adherer/5321/
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — meta description shared by 2 pages: https://co-cernes.com/adherer/

#### Missing <!DOCTYPE html> (quirks-mode rendering risk)

- Rule: `encoding.doctype_missing` · Category: Content · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — no <!DOCTYPE html> in the response — add it to avoid quirks-mode rendering differences

#### Image filename is generic/auto-generated (missed image-search signal)

- Rule: `images.generic_filename` · Category: Images · Occurrences: 4

- [https://co-cernes.com/](https://co-cernes.com/) — 8 image(s) use a generic/auto-generated filename (e.g. IMG_1234.jpg, photo1.png, a bare UUID). Google reads the filename as a signal of image content, so rename files descriptively (hyphen-separated words) before upload.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 1 image(s) use a generic/auto-generated filename (e.g. IMG_1234.jpg, photo1.png, a bare UUID). Google reads the filename as a signal of image content, so rename files descriptively (hyphen-separated words) before upload.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 8 image(s) use a generic/auto-generated filename (e.g. IMG_1234.jpg, photo1.png, a bare UUID). Google reads the filename as a signal of image content, so rename files descriptively (hyphen-separated words) before upload.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 8 image(s) use a generic/auto-generated filename (e.g. IMG_1234.jpg, photo1.png, a bare UUID). Google reads the filename as a signal of image content, so rename files descriptively (hyphen-separated words) before upload.

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 38

- [https://co-cernes.com/](https://co-cernes.com/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — the likely hero/LCP image (cropped-logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.

#### Images without width/height (layout shift / CLS)

- Rule: `images.missing_dimensions` · Category: Images · Occurrences: 38

- [https://co-cernes.com/](https://co-cernes.com/) — 158 of 158 images without width/height
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — 9 of 13 images without width/height
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 2 of 2 images without width/height
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 2 of 2 images without width/height
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 2 of 2 images without width/height
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 19 of 19 images without width/height
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — 19 of 19 images without width/height
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 19 of 19 images without width/height
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 19 of 21 images without width/height
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 2 of 2 images without width/height
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 3 of 3 images without width/height
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 2 of 2 images without width/height
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 2 of 2 images without width/height
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 7 of 9 images without width/height
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 2 of 2 images without width/height
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 2 of 2 images without width/height
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 9 of 9 images without width/height
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 2 of 2 images without width/height
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 2 of 2 images without width/height
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 2 of 2 images without width/height
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 11 of 11 images without width/height
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 2 of 2 images without width/height
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 6 of 6 images without width/height
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — 2 of 2 images without width/height
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 2 of 2 images without width/height
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 2 of 2 images without width/height
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 7 of 7 images without width/height
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 2 of 2 images without width/height
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 8 of 8 images without width/height
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 7 of 8 images without width/height
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 2 of 2 images without width/height
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 2 of 2 images without width/height
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 15 of 15 images without width/height
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 2 of 2 images without width/height
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 158 of 158 images without width/height
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 2 of 2 images without width/height
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 6 of 8 images without width/height
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 158 of 158 images without width/height

#### Internal link has no anchor text / accessible name

- Rule: `links.no_anchor_text` · Category: Links · Occurrences: 37

- [https://co-cernes.com/](https://co-cernes.com/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 3 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.

#### Meta description too long

- Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 16

- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 184 chars
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 349 chars
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 344 chars
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 163 chars
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 339 chars
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 169 chars
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 329 chars
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 169 chars
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 354 chars
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 313 chars
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 166 chars
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 169 chars
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 318 chars
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 339 chars
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 374 chars
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 172 chars

#### Meta description too short

- Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 2

- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — 15 chars
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 11 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 35

- [https://co-cernes.com/](https://co-cernes.com/) — og:description, og:image
- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — og:image
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — og:title, og:description, og:image
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — og:image
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — og:image
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — og:image
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — og:description
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — og:description
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — og:image
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — og:description, og:image
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — og:image
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — og:description, og:image
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — og:description, og:image
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — og:description, og:image
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — og:description, og:image
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — og:description, og:image
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — og:image
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — og:image
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — og:description, og:image
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — og:description, og:image
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — og:description, og:image
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — og:image
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — og:description, og:image
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — og:description, og:image
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — og:image
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — og:image
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — og:description, og:image
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — og:image
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — og:description, og:image
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — og:description, og:image
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — og:description, og:image
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — og:description, og:image
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — og:image
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — og:description
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — og:description, og:image

#### Legacy image format (jpg/png/gif) with no next-gen fallback

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 39

- [https://co-cernes.com/](https://co-cernes.com/) — 153 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — 12 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — 19 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — 19 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — 19 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — 21 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — 11 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — 15 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 153 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 153 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.

#### No ETag header (no conditional GET for unchanged pages)

- Rule: `perf.no_etag` · Category: Performance · Occurrences: 47

- [https://co-cernes.com/](https://co-cernes.com/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.

#### No Last-Modified header (no conditional GET for unchanged pages)

- Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 47

- [https://co-cernes.com/](https://co-cernes.com/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.

#### URL redirects to another URL

- Rule: `redirect.single` · Category: Crawlability · Occurrences: 6

- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — redirects to https://co-cernes.com/adherer/
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — redirects to https://co-cernes.com/login/
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — redirects to https://co-cernes.com/login/
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — redirects to https://co-cernes.com/boutique/
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — redirects to https://co-cernes.com
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — redirects to https://co-cernes.com/

#### Deprecated schema type with no Google rich result

- Rule: `schema.deprecated_type` · Category: Structured Data · Occurrences: 46

- [https://co-cernes.com/](https://co-cernes.com/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 49

- [https://co-cernes.com/](https://co-cernes.com/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/?mailpoet_page=subscriptions](https://co-cernes.com/?mailpoet_page=subscriptions) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/adherer/](https://co-cernes.com/adherer/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/adherer/5321/](https://co-cernes.com/adherer/5321/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/annonce-rp/](https://co-cernes.com/annonce-rp/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/annonce-rp/annonce-rp-11-10/](https://co-cernes.com/annonce-rp/annonce-rp-11-10/) — CSP, X-Content-Type-Options, HSTS
- [https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-challex-10-12-2024/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/](https://co-cernes.com/annonce-rp/reunion-publique-la-roche-05-12-2024/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/](https://co-cernes.com/annonce-rp/reunions-publiques-fevrier-2025/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/association/](https://co-cernes.com/association/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/association/assemblee-generale-17-04-2026/](https://co-cernes.com/association/assemblee-generale-17-04-2026/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/author/cocernes/](https://co-cernes.com/author/cocernes/) — X-Content-Type-Options, HSTS, CSP
- [https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/](https://co-cernes.com/avis/pierre-francois-novembre-2023-matelas/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/banderoles-pancartes/](https://co-cernes.com/banderoles-pancartes/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/](https://co-cernes.com/banderoles-pancartes/atelier-banderoles-et-pancartes/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/blog/](https://co-cernes.com/blog/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/boutique/](https://co-cernes.com/boutique/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/cgv/](https://co-cernes.com/cgv/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/commander/](https://co-cernes.com/commander/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/contact/](https://co-cernes.com/contact/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/documentation/](https://co-cernes.com/documentation/) — X-Content-Type-Options, HSTS, CSP
- [https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/](https://co-cernes.com/documentation/documentation-sur-le-site-de-noe21/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/etudes-cern/](https://co-cernes.com/etudes-cern/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/](https://co-cernes.com/etudes-cern/synthese-des-contraintes-et-opportunites-dimplantation-maj-17-10-2024/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/faq/](https://co-cernes.com/faq/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/livraison-et-retours/](https://co-cernes.com/livraison-et-retours/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/login/](https://co-cernes.com/login/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/maintenance/](https://co-cernes.com/maintenance/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/mentions-legales/](https://co-cernes.com/mentions-legales/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/mis-en-avant/](https://co-cernes.com/mis-en-avant/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/mon-compte/](https://co-cernes.com/mon-compte/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/mon-compte/commandes/](https://co-cernes.com/mon-compte/commandes/) — CSP, X-Content-Type-Options, HSTS
- [https://co-cernes.com/newsletter/](https://co-cernes.com/newsletter/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/newsletter/2025-02-newsletter-janvier/](https://co-cernes.com/newsletter/2025-02-newsletter-janvier/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/non-classe/](https://co-cernes.com/non-classe/) — CSP, X-Content-Type-Options, HSTS
- [https://co-cernes.com/non-classe/flyer-argumentaire-a5/](https://co-cernes.com/non-classe/flyer-argumentaire-a5/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/](https://co-cernes.com/non-classe/reunion-publique-annecy-12-02-2025/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/panier/](https://co-cernes.com/panier/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/presse/](https://co-cernes.com/presse/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/](https://co-cernes.com/presse/2024-11-christelle-petex-soppose-au-fcc-le-faucigny/) — X-Content-Type-Options, HSTS, CSP
- [https://co-cernes.com/produits/non-classe/](https://co-cernes.com/produits/non-classe/) — CSP, X-Content-Type-Options, HSTS
- [https://co-cernes.com/register/](https://co-cernes.com/register/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/reinitialisation-mot-de-passe/](https://co-cernes.com/reinitialisation-mot-de-passe/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/tract-cern/](https://co-cernes.com/tract-cern/) — CSP, X-Content-Type-Options, HSTS
- [https://co-cernes.com/tract-cern/tract-cern/](https://co-cernes.com/tract-cern/tract-cern/) — HSTS, CSP, X-Content-Type-Options
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — HSTS, CSP, X-Content-Type-Options

#### target=_blank link without rel=noopener (tab-napping)

- Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 3

- [https://co-cernes.com/](https://co-cernes.com/) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://co-cernes.com/remerciements/](https://co-cernes.com/remerciements/) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

#### Title is very short

- Rule: `title.too_short` · Category: Titles · Occurrences: 1

- [https://co-cernes.com/boutique/non-classe/mon-produit-simple/](https://co-cernes.com/boutique/non-classe/mon-produit-simple/) — 11 chars

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd)

#### Many query parameters

- Rule: `url.many_params` · Category: URL · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — 4 parameters

#### URL is very long

- Rule: `url.too_long` · Category: URL · Occurrences: 1

- [https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd](https://co-cernes.com/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzExLCI2NjQ0ZmMyMGYyYmMiLDAsMCw1LDFd) — 117 chars

#### Underscores in URL path (prefer hyphens)

- Rule: `url.underscores` · Category: URL · Occurrences: 1

- [https://co-cernes.com/us_media_category/documents-etude-cern/](https://co-cernes.com/us_media_category/documents-etude-cern/)

#### Uppercase letters in URL path

- Rule: `url.uppercase` · Category: URL · Occurrences: 1

- [https://co-cernes.com/wp-content/uploads/CO-CERNES-Bulletin-Adhesion-2026.pdf](https://co-cernes.com/wp-content/uploads/CO-CERNES-Bulletin-Adhesion-2026.pdf)

## Checks & coverage

Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean.

- ✗ Agent Readiness — 38 warning(s), 57 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✗ Cache — 1 notice(s)
- ✗ Canonical — 1 warning(s)
- ✗ Content — 30 warning(s), 23 notice(s)
- ✗ Crawlability — 2 error(s), 1 warning(s), 6 notice(s)
- ✗ Duplicate — 14 warning(s), 2 notice(s)
- ✓ Geo — clean
- ✗ Headings — 25 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 37 warning(s), 42 notice(s)
- ✗ Indexability — 2 warning(s)
- ✗ Links — 2 error(s), 4 warning(s), 37 notice(s)
- ✗ Meta Description — 22 warning(s), 19 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 46 warning(s), 171 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 52 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 36 notice(s)
- ✗ Structured Data — 11 warning(s), 47 notice(s)
- ✗ Titles — 1 warning(s), 1 notice(s)
- ✗ URL — 4 notice(s)
- ✓ Video — clean

---
*Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/co-cernes.com*

## Use Crawlinx from your app / agent

Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit.

### MCP server (agent skill)

Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line:

```bash
claude mcp add --transport http crawlinx https://crawlinx.com/mcp
```

Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed:

- `scan_url` — start an SEO audit of a URL.
- `get_report` — fetch the finished report as structured JSON.
- `get_report_markdown` — fetch a compact, LLM-ready Markdown report.

Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page.

### HTTP API

For apps and CLI scripts, the same audit is available over plain HTTP.

**Start a scan**

```
POST https://crawlinx.com/api/scan
Content-Type: application/json

{"url":"https://example.com","mode":"free"}
```

`mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check).
Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans.

**Get the JSON report**

```
GET https://crawlinx.com/api/scan/{id}/report
```

Returns the full structured report JSON once the scan completes.

**Get this Markdown report**

```
GET https://crawlinx.com/r/{id}.md
```

Returns this LLM-ready Markdown document.

**List recent public audits**

```
GET https://crawlinx.com/api/reports
```

### Quick start (curl)

```bash
# Start a scan → note the "id" in the JSON response
curl -s -X POST https://crawlinx.com/api/scan \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com","mode":"free"}'

# Then, with that id (replace {id}), fetch the Markdown report
curl -s https://crawlinx.com/r/{id}.md
```

Full API reference & usage rules: https://crawlinx.com/api