--- tool: Crawlinx SEO audit source: https://crawlinx.com domain: datterberg.com report_url: "https://crawlinx.com/audit/datterberg.com" crawl_id: 20260721T193243-34a49ab6 health_score: 65 generated_at: 2026-08-26T17:28:39Z total_pages: 27 html_pages: 27 indexable_pages: 27 errors: 0 warnings: 168 notices: 263 --- # SEO audit: datterberg.com **Health score: 65/100** — needs attention > Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/datterberg.com ## Overview | Metric | Value | | --- | --- | | Pages crawled | 27 | | HTML pages | 27 | | Indexable | 27 | | Non-indexable | 0 | | Orphan pages | 10 | | Broken internal links | 0 | | Avg response time | 1280 ms | | Errors / Warnings / Notices | 0 / 168 / 263 | | Status codes | 27×200 | ## Categories | Category | Score | Errors | Warnings | Notices | | --- | ---: | ---: | ---: | ---: | | Links | 54 | 0 | 41 | 0 | | Duplicate | 61 | 0 | 35 | 0 | | Headings | 70 | 0 | 27 | 0 | | Meta Description | 70 | 0 | 27 | 0 | | Performance | 70 | 0 | 27 | 95 | | Titles | 96 | 0 | 4 | 0 | | Agent Readiness | 97 | 0 | 3 | 28 | | Canonical | 97 | 0 | 3 | 0 | | Crawlability | 99 | 0 | 1 | 2 | | Images | 100 | 0 | 0 | 27 | | Robots | 100 | 0 | 0 | 1 | | Security | 100 | 0 | 0 | 27 | | Social | 100 | 0 | 0 | 54 | | Structured Data | 100 | 0 | 0 | 27 | | URL | 100 | 0 | 0 | 2 | ## Issues ### Warnings (168) #### Control has no accessible name - Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 3 - [http://datterberg.com/](http://datterberg.com/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [http://www.datterberg.com/](http://www.datterberg.com/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://datterberg.com/](https://datterberg.com/) — 2 button/link(s) with no text or aria-label — an agent can't target them #### Missing canonical tag - Rule: `canonical.missing` · Category: Canonical · Occurrences: 3 - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) #### Duplicate page content - Rule: `duplicate.content` · Category: Duplicate · Occurrences: 10 - [http://datterberg.com/](http://datterberg.com/) — content shared by 3 pages: https://datterberg.com/, http://www.datterberg.com/ - [http://www.datterberg.com/](http://www.datterberg.com/) — content shared by 3 pages: https://datterberg.com/, http://datterberg.com/ - [https://datterberg.com/](https://datterberg.com/) — content shared by 3 pages: http://datterberg.com/, http://www.datterberg.com/ - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — content shared by 3 pages: https://datterberg.com/category/frontpage_categories/sliderfront/, https://datterberg.com/category/frontpage_categories/investigation/ - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — content shared by 3 pages: https://datterberg.com/category/frontpage_categories/sliderfront/, https://datterberg.com/category/devis/ - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — content shared by 3 pages: https://datterberg.com/category/devis/, https://datterberg.com/category/frontpage_categories/investigation/ - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — content shared by 2 pages: https://datterberg.com/nos-missions/ - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — content shared by 2 pages: https://datterberg.com/nos-metiers/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — content shared by 2 pages: https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — content shared by 2 pages: https://datterberg.com/politique-de-protection-des-donnees-personnelles #### Near-duplicate page content - Rule: `duplicate.near` · Category: Duplicate · Occurrences: 20 - [http://datterberg.com/](http://datterberg.com/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [http://www.datterberg.com/](http://www.datterberg.com/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/](https://datterberg.com/) — near-duplicate of 15 page(s): https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/, https://datterberg.com/home/techniques-investigation/ - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/ils-nous-font-confiance/, https://datterberg.com/home/techniques-investigation/ - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/home/techniques-investigation/ - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — near-duplicate of 15 page(s): https://datterberg.com/, https://datterberg.com/contactez-nous/, https://datterberg.com/ils-nous-font-confiance/ - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — near-duplicate of 3 page(s): https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/, https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/, https://datterberg.com/nos-missions/reconnaissance-des-fondations/ - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — near-duplicate of 3 page(s): https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/, https://datterberg.com/nos-missions/carottage/, https://datterberg.com/nos-missions/reconnaissance-des-fondations/ - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — near-duplicate of 3 page(s): https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/, https://datterberg.com/nos-missions/carottage/, https://datterberg.com/nos-missions/reconnaissance-des-fondations/ - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — near-duplicate of 3 page(s): https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/, https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/, https://datterberg.com/nos-missions/carottage/ #### Duplicate across pages - Rule: `duplicate.title` · Category: Duplicate · Occurrences: 5 - [http://datterberg.com/](http://datterberg.com/) — title shared by 3 pages: https://datterberg.com/, http://www.datterberg.com/ - [http://www.datterberg.com/](http://www.datterberg.com/) — title shared by 3 pages: https://datterberg.com/, http://datterberg.com/ - [https://datterberg.com/](https://datterberg.com/) — title shared by 3 pages: http://datterberg.com/, http://www.datterberg.com/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — title shared by 2 pages: https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — title shared by 2 pages: https://datterberg.com/politique-de-protection-des-donnees-personnelles #### Missing <h1> - Rule: `h1.missing` · Category: Headings · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) - [http://www.datterberg.com/](http://www.datterberg.com/) - [https://datterberg.com/](https://datterberg.com/) - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) #### Orphan page (no internal inlinks) - Rule: `links.orphan` · Category: Links · Occurrences: 10 - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — no internal links point here - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — no internal links point here - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — no internal links point here - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — no internal links point here - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — no internal links point here - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — no internal links point here - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — no internal links point here - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — no internal links point here - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — no internal links point here - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — no internal links point here #### Internal link points to a redirect - Rule: `links.redirect_target` · Category: Links · Occurrences: 31 - [http://datterberg.com/](http://datterberg.com/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [http://www.datterberg.com/](http://www.datterberg.com/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/](https://datterberg.com/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — http://datterberg.com/ → https://datterberg.com/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — http://www.datterberg.com/ → https://datterberg.com/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — http://datterberg.com/ → https://datterberg.com/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — http://www.datterberg.com/ → https://datterberg.com/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — https://datterberg.com/politique-de-protection-des-donnees-personnelles/ → https://datterberg.com/politique-de-protection-des-donnees-personnelles/ #### Missing meta description - Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) - [http://www.datterberg.com/](http://www.datterberg.com/) - [https://datterberg.com/](https://datterberg.com/) - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) #### Render-blocking script in <head> (no defer/async) - Rule: `perf.render_blocking` · Category: Performance · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [http://www.datterberg.com/](http://www.datterberg.com/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/](https://datterberg.com/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) #### Redirect chain (multiple hops) - Rule: `redirect.chain` · Category: Crawlability · Occurrences: 1 - [http://www.datterberg.com/](http://www.datterberg.com/) — 2 hops ending at https://datterberg.com/ #### Title likely truncated in SERP (too wide) - Rule: `title.too_long` · Category: Titles · Occurrences: 4 - [http://datterberg.com/](http://datterberg.com/) — 95 chars, ~701px (limit ~580px) - [http://www.datterberg.com/](http://www.datterberg.com/) — 95 chars, ~701px (limit ~580px) - [https://datterberg.com/](https://datterberg.com/) — 95 chars, ~701px (limit ~580px) - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — 91 chars, ~691px (limit ~580px) ### Notices (263) #### Heading levels skip a level - Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) — h4 follows h2 — skips h3 - [http://www.datterberg.com/](http://www.datterberg.com/) — h4 follows h2 — skips h3 - [https://datterberg.com/](https://datterberg.com/) — h4 follows h2 — skips h3 - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — h4 follows h2 — skips h3 - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — h4 follows h2 — skips h3 - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — h4 follows h2 — skips h3 - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — h5 follows h2 — skips h3 - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — h4 follows h2 — skips h3 - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — h4 follows h2 — skips h3 - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — h4 follows h2 — skips h3 - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — h4 follows h2 — skips h3 - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — h4 follows h2 — skips h3 - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — h4 follows h2 — skips h3 - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — h4 follows h2 — skips h3 - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — h4 follows h2 — skips h3 - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — h4 follows h2 — skips h3 - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — h4 follows h2 — skips h3 - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — h4 follows h2 — skips h3 #### No llms.txt for AI agents - Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1 - [https://datterberg.com/](https://datterberg.com/) — no llms.txt found at the site root — add one so AI agents get a curated site summary #### Likely hero image lacks fetchpriority=high - Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 14 - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — the likely hero/LCP image (maaf.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://datterberg.com/investigations/](https://datterberg.com/investigations/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — the likely hero/LCP image (slide-datterberg-contact.jpg) 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://datterberg.com/solutios/](https://datterberg.com/solutios/) — the likely hero/LCP image (icon-datter-1.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: 27 - [http://datterberg.com/](http://datterberg.com/) — 22 of 26 images without width/height - [http://www.datterberg.com/](http://www.datterberg.com/) — 22 of 26 images without width/height - [https://datterberg.com/](https://datterberg.com/) — 22 of 26 images without width/height - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — 22 of 23 images without width/height - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — 22 of 23 images without width/height - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — 22 of 23 images without width/height - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — 22 of 24 images without width/height - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — 22 of 23 images without width/height - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — 22 of 23 images without width/height - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — 31 of 32 images without width/height - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — 22 of 23 images without width/height - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — 22 of 23 images without width/height - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — 22 of 23 images without width/height - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — 22 of 25 images without width/height - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — 22 of 25 images without width/height - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — 22 of 25 images without width/height - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — 22 of 26 images without width/height - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — 22 of 23 images without width/height - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — 22 of 25 images without width/height - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — 22 of 24 images without width/height - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — 22 of 24 images without width/height - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — 22 of 24 images without width/height - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — 22 of 24 images without width/height - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — 22 of 23 images without width/height - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — 22 of 23 images without width/height - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — 22 of 23 images without width/height - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — 31 of 32 images without width/height #### Missing Open Graph tags - Rule: `og.missing` · Category: Social · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) — og:title, og:description, og:image - [http://www.datterberg.com/](http://www.datterberg.com/) — og:title, og:description, og:image - [https://datterberg.com/](https://datterberg.com/) — og:title, og:description, og:image - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — og:title, og:description, og:image - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — og:title, og:description, og:image - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — og:title, og:description, og:image - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — og:title, og:description, og:image - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — og:title, og:description, og:image - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — og:title, og:description, og:image - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — og:title, og:description, og:image - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — og:title, og:description, og:image - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — og:title, og:description, og:image - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — og:title, og:description, og:image - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — og:title, og:description, og:image - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — og:title, og:description, og:image - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — og:title, og:description, og:image - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — og:title, og:description, og:image - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — og:title, og:description, og:image - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — og:title, og:description, og:image - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — og:title, og:description, og:image - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — og:title, og:description, og:image - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — og:title, og:description, og:image - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — og:title, og:description, og:image - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — og:title, og:description, og:image - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — og:title, og:description, og:image - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — og:title, og:description, og:image - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — og:title, og:description, og:image #### Legacy image format (jpg/png/gif) with no next-gen fallback - Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) — 26 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. - [http://www.datterberg.com/](http://www.datterberg.com/) — 26 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://datterberg.com/](https://datterberg.com/) — 26 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://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — 23 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://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — 23 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://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — 23 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://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — 24 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://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — 23 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://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — 23 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://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — 32 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://datterberg.com/investigations/](https://datterberg.com/investigations/) — 23 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://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — 23 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://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — 23 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://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — 25 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://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — 25 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://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — 25 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://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — 26 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://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — 23 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://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — 25 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://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — 24 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://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — 24 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://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — 24 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://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — 24 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://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — 23 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://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — 23 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://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — 23 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://datterberg.com/solutios/](https://datterberg.com/solutios/) — 32 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: 27 - [http://datterberg.com/](http://datterberg.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. - [http://www.datterberg.com/](http://www.datterberg.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://datterberg.com/](https://datterberg.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://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — 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://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — 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://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — 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://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — 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://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — 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://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — 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://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — 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://datterberg.com/investigations/](https://datterberg.com/investigations/) — 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://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — 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://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — 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://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — 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://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — 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://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — 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://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — 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://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — 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://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — 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://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — 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://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — 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://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — 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://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — 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://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — 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://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — 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://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — 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://datterberg.com/solutios/](https://datterberg.com/solutios/) — 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: 27 - [http://datterberg.com/](http://datterberg.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. - [http://www.datterberg.com/](http://www.datterberg.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://datterberg.com/](https://datterberg.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://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — 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://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — 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://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — 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://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — 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://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — 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://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — 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://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — 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://datterberg.com/investigations/](https://datterberg.com/investigations/) — 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://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — 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://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — 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://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — 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://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — 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://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — 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://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — 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://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — 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://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — 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://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — 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://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — 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://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — 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://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — 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://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — 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://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — 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://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — 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://datterberg.com/solutios/](https://datterberg.com/solutios/) — 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: 2 - [http://datterberg.com/](http://datterberg.com/) — redirects to https://datterberg.com/ - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — redirects to https://datterberg.com/politique-de-protection-des-donnees-personnelles/ #### robots.txt missing (root returns 404/none) - Rule: `robots.txt_missing` · Category: Robots · Occurrences: 1 - [https://datterberg.com/](https://datterberg.com/) — robots.txt did not return a 200 at the site root — a healthy site should serve one (declare your sitemap and confirm the host serves root files) #### No structured data detected - Rule: `schema.none` · Category: Structured Data · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) - [http://www.datterberg.com/](http://www.datterberg.com/) - [https://datterberg.com/](https://datterberg.com/) - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) #### Missing recommended security headers - Rule: `security.missing_headers` · Category: Security · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) — HSTS, CSP - [http://www.datterberg.com/](http://www.datterberg.com/) — HSTS, CSP - [https://datterberg.com/](https://datterberg.com/) — HSTS, CSP - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) — HSTS, CSP - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) — CSP, HSTS - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) — HSTS, CSP - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) — CSP, HSTS - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) — HSTS, CSP - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) — HSTS, CSP - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) — HSTS, CSP - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) — CSP, HSTS - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) — HSTS, CSP - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) — HSTS, CSP - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) — CSP, HSTS - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) — HSTS, CSP - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) — HSTS, CSP - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) — HSTS, CSP - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) — HSTS, CSP - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) — HSTS, CSP - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) — HSTS, CSP - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) — HSTS, CSP - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) — HSTS, CSP - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) — HSTS, CSP - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) — HSTS, CSP - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) — HSTS, CSP - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) — HSTS, CSP - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) — HSTS, CSP #### Missing Twitter Card tag - Rule: `twitter.missing` · Category: Social · Occurrences: 27 - [http://datterberg.com/](http://datterberg.com/) - [http://www.datterberg.com/](http://www.datterberg.com/) - [https://datterberg.com/](https://datterberg.com/) - [https://datterberg.com/category/devis/](https://datterberg.com/category/devis/) - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) - [https://datterberg.com/contactez-nous/](https://datterberg.com/contactez-nous/) - [https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/](https://datterberg.com/demande-de-devis-simple-gratuit-et-sans-engagement/) - [https://datterberg.com/home/techniques-investigation/](https://datterberg.com/home/techniques-investigation/) - [https://datterberg.com/ils-nous-font-confiance/](https://datterberg.com/ils-nous-font-confiance/) - [https://datterberg.com/investigations/](https://datterberg.com/investigations/) - [https://datterberg.com/mentions-legales/](https://datterberg.com/mentions-legales/) - [https://datterberg.com/nos-metiers/](https://datterberg.com/nos-metiers/) - [https://datterberg.com/nos-metiers/deroulement-des-investigations/](https://datterberg.com/nos-metiers/deroulement-des-investigations/) - [https://datterberg.com/nos-metiers/domaines-dintervention/](https://datterberg.com/nos-metiers/domaines-dintervention/) - [https://datterberg.com/nos-metiers/etude-geotechnique/](https://datterberg.com/nos-metiers/etude-geotechnique/) - [https://datterberg.com/nos-metiers/nos-outils-et-machines/](https://datterberg.com/nos-metiers/nos-outils-et-machines/) - [https://datterberg.com/nos-missions/](https://datterberg.com/nos-missions/) - [https://datterberg.com/nos-missions/carottage/](https://datterberg.com/nos-missions/carottage/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt1/) - [https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/](https://datterberg.com/nos-missions/mission-dinvestigations-geotechniques-mt2/) - [https://datterberg.com/nos-missions/reconnaissance-des-fondations/](https://datterberg.com/nos-missions/reconnaissance-des-fondations/) - [https://datterberg.com/nous-connaitre/](https://datterberg.com/nous-connaitre/) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles](https://datterberg.com/politique-de-protection-des-donnees-personnelles) - [https://datterberg.com/politique-de-protection-des-donnees-personnelles/](https://datterberg.com/politique-de-protection-des-donnees-personnelles/) - [https://datterberg.com/politique-relative-aux-cookies/](https://datterberg.com/politique-relative-aux-cookies/) - [https://datterberg.com/solutios/](https://datterberg.com/solutios/) #### Underscores in URL path (prefer hyphens) - Rule: `url.underscores` · Category: URL · Occurrences: 2 - [https://datterberg.com/category/frontpage_categories/investigation/](https://datterberg.com/category/frontpage_categories/investigation/) - [https://datterberg.com/category/frontpage_categories/sliderfront/](https://datterberg.com/category/frontpage_categories/sliderfront/) ## Checks & coverage Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean. - ✗ Agent Readiness — 3 warning(s), 28 notice(s) - ✓ AI Content — clean - ✓ Amp — clean - ✓ Budget — clean - ✓ Cache — clean - ✗ Canonical — 3 warning(s) - ✓ Content — clean - ✗ Crawlability — 1 warning(s), 2 notice(s) - ✗ Duplicate — 35 warning(s) - ✓ Geo — clean - ✗ Headings — 27 warning(s) - ✓ Hreflang — clean - ✗ Images — 27 notice(s) - ✓ Indexability — clean - ✗ Links — 41 warning(s) - ✗ Meta Description — 27 warning(s) - ✓ Mobile — clean - ✗ Performance — 27 warning(s), 95 notice(s) - ✓ Rendering — clean - ✗ Robots — 1 notice(s) - ✗ Security — 27 notice(s) - ✓ Sitemap — clean - ✗ Social — 54 notice(s) - ✗ Structured Data — 27 notice(s) - ✗ Titles — 4 warning(s) - ✗ URL — 2 notice(s) - ✓ Video — clean --- *Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/datterberg.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