---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: halon.io
report_url: "https://crawlinx.com/audit/halon.io"
crawl_id: 20260725T043437-8a93390b
health_score: 65
generated_at: 2026-08-26T16:49:36Z
total_pages: 50
html_pages: 50
indexable_pages: 49
errors: 0
warnings: 198
notices: 480
---

# SEO audit: halon.io

**Health score: 65/100** — needs attention

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 50 |
| HTML pages | 50 |
| Indexable | 49 |
| Non-indexable | 1 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 970 ms |
| Errors / Warnings / Notices | 0 / 198 / 480 |
| Status codes | 50×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Performance | 59 | 0 | 68 | 158 |
| Links | 69 | 0 | 51 | 3 |
| Agent Readiness | 72 | 0 | 46 | 35 |
| Duplicate | 94 | 0 | 10 | 5 |
| Content | 95 | 0 | 8 | 48 |
| Rendering | 98 | 0 | 4 | 0 |
| Canonical | 98 | 0 | 3 | 0 |
| Headings | 99 | 0 | 2 | 3 |
| Budget | 99 | 0 | 1 | 0 |
| Crawlability | 99 | 0 | 1 | 4 |
| Images | 99 | 0 | 1 | 47 |
| Indexability | 99 | 0 | 1 | 0 |
| Structured Data | 99 | 0 | 1 | 49 |
| Video | 99 | 0 | 1 | 0 |
| Amp | 100 | 0 | 0 | 14 |
| Cache | 100 | 0 | 0 | 46 |
| Meta Description | 100 | 0 | 0 | 9 |
| Security | 100 | 0 | 0 | 53 |
| Sitemap | 100 | 0 | 0 | 1 |
| Titles | 100 | 0 | 0 | 5 |

## Issues

### Warnings (198)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 46

- [https://halon.io/](https://halon.io/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog](https://halon.io/blog) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 5 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/case-studies](https://halon.io/case-studies) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/company](https://halon.io/company) — 7 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/contact](https://halon.io/contact) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/demo](https://halon.io/demo) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/events](https://halon.io/events) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/features/](https://halon.io/features/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/glossary](https://halon.io/glossary) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/old](https://halon.io/old) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/pricing](https://halon.io/pricing) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/product](https://halon.io/product) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/product-old](https://halon.io/product-old) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/products/protect](https://halon.io/products/protect) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/support](https://halon.io/support) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/testblog](https://halon.io/testblog) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://halon.io/why-halon](https://halon.io/why-halon) — 2 button/link(s) with no text or aria-label — an agent can't target them

#### Noindex page receives internal links (crawl-budget waste)

- Rule: `budget.noindex_linked` · Category: Budget · Occurrences: 1

- [https://halon.io/demo](https://halon.io/demo) — this noindex page has 46 internal inlink(s) — Googlebot follows them, fetches the page, then drops it unindexed, spending crawl budget for no indexing benefit (and the links leak equity). Remove/redirect the links, or drop the noindex if the page should be indexed. Linked from: https://halon.io/, https://halon.io/blog/smtp-lang-extension, https://halon.io/case-studies/duocircle.

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 3

- [https://halon.io/blog](https://halon.io/blog)
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech)
- [https://halon.io/testblog](https://halon.io/testblog)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 8

- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — 4 words
- [https://halon.io/contact](https://halon.io/contact) — 193 words
- [https://halon.io/events](https://halon.io/events) — 189 words
- [https://halon.io/glossary](https://halon.io/glossary) — 191 words
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — 3 words
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — 3 words
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — 3 words
- [https://halon.io/testblog](https://halon.io/testblog) — 145 words

#### Duplicate page content

- Rule: `duplicate.content` · Category: Duplicate · Occurrences: 5

- [https://halon.io/features/](https://halon.io/features/) — content shared by 3 pages: https://halon.io/product, https://halon.io/product-old
- [https://halon.io/pricing](https://halon.io/pricing) — content shared by 2 pages: https://halon.io/request-pricing/
- [https://halon.io/product](https://halon.io/product) — content shared by 3 pages: https://halon.io/product-old, https://halon.io/features/
- [https://halon.io/product-old](https://halon.io/product-old) — content shared by 3 pages: https://halon.io/product, https://halon.io/features/
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — content shared by 2 pages: https://halon.io/pricing

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 5

- [https://halon.io/features/](https://halon.io/features/) — title shared by 3 pages: https://halon.io/product, https://halon.io/product-old
- [https://halon.io/pricing](https://halon.io/pricing) — title shared by 2 pages: https://halon.io/request-pricing/
- [https://halon.io/product](https://halon.io/product) — title shared by 3 pages: https://halon.io/product-old, https://halon.io/features/
- [https://halon.io/product-old](https://halon.io/product-old) — title shared by 3 pages: https://halon.io/product, https://halon.io/features/
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — title shared by 2 pages: https://halon.io/pricing

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 2

- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf)
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 1

- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 1 of 65 images missing alt

#### Hero/LCP image is lazy-loaded (loading=lazy delays LCP)

- Rule: `images.no_lazy_lcp_candidate` · Category: Performance · Occurrences: 18

- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — the likely hero/LCP image (engage-logo-black-outlined.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — the likely hero/LCP image (profile-black-on-white.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — the likely hero/LCP image (anders%20berggren%20portrait-1.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — the likely hero/LCP image (profile-black-on-white.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — the likely hero/LCP image (profile-black-on-white.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — the likely hero/LCP image (chaitanya_chinta_portrait-1.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — the likely hero/LCP image (1557714877699.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — the likely hero/LCP image (anders%20berggren%20portrait-1.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — the likely hero/LCP image (profile-black-on-white.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — the likely hero/LCP image (halon-classify-stadt-straubing.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/company](https://halon.io/company) — the likely hero/LCP image (engage-logo-black-outlined.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — the likely hero/LCP image (pro-tip.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — the likely hero/LCP image (classify-logo-white.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — the likely hero/LCP image (engage-logo-white.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — the likely hero/LCP image (gam%201%2c%20joypad%2c%20game%2c%20play%2c%20video%2c%20score%2c%20console.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — the likely hero/LCP image (hand-gradient.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — the likely hero/LCP image (protect-logo-white-1.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://halon.io/products/protect](https://halon.io/products/protect) — the likely hero/LCP image (protect-logo-white-1.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.

#### Page is noindex

- Rule: `index.noindex` · Category: Indexability · Occurrences: 1

- [https://halon.io/demo](https://halon.io/demo) — meta/X-Robots: meta=noindex

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 51

- [https://halon.io/](https://halon.io/) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog](https://halon.io/blog) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — https://halon.io/about-halon/case-one-com/ → https://halon.io/case-studies/group-one
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — https://halon.io/features/ → https://halon.io/product
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — https://halon.io/request-pricing/ → https://halon.io/pricing
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/case-studies](https://halon.io/case-studies) — https://halon.io/case-studies-stadt-straubing → https://halon.io/case-studies/stadt-straubing
- [https://halon.io/case-studies](https://halon.io/case-studies) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/company](https://halon.io/company) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/contact](https://halon.io/contact) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/demo](https://halon.io/demo) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/events](https://halon.io/events) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/features/](https://halon.io/features/) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/glossary](https://halon.io/glossary) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/old](https://halon.io/old) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/old](https://halon.io/old) — https://halon.io/product-old → https://halon.io/product
- [https://halon.io/pricing](https://halon.io/pricing) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/product](https://halon.io/product) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/product-old](https://halon.io/product-old) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/products/protect](https://halon.io/products/protect) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/support](https://halon.io/support) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/testblog](https://halon.io/testblog) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one
- [https://halon.io/why-halon](https://halon.io/why-halon) — https://halon.io/case-studies/group-one → https://halon.io/case-studies/group-one

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 50

- [https://halon.io/](https://halon.io/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog](https://halon.io/blog) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/case-studies](https://halon.io/case-studies) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/company](https://halon.io/company) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/contact](https://halon.io/contact) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/demo](https://halon.io/demo) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/events](https://halon.io/events) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/features/](https://halon.io/features/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/glossary](https://halon.io/glossary) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/old](https://halon.io/old) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/pricing](https://halon.io/pricing) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/product](https://halon.io/product) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/product-old](https://halon.io/product-old) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/products/protect](https://halon.io/products/protect) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/support](https://halon.io/support) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/testblog](https://halon.io/testblog) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://halon.io/why-halon](https://halon.io/why-halon) — 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://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — 2 hops ending at https://halon.io/case-studies/group-one

#### Content only rendered by JavaScript (invisible to non-JS crawlers & AI)

- Rule: `rendering.js_shell` · Category: Rendering · Occurrences: 4

- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — Raw HTML has 4 words and 0 links — this page is built by JavaScript in the browser. Googlebot renders JS but delays it, and most crawlers and AI assistants (ChatGPT, Perplexity, Claude) don't run JavaScript at all, so to them the page looks empty. Server-render or pre-render your main content and navigation.
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — Raw HTML has 3 words and 0 links — this page is built by JavaScript in the browser. Googlebot renders JS but delays it, and most crawlers and AI assistants (ChatGPT, Perplexity, Claude) don't run JavaScript at all, so to them the page looks empty. Server-render or pre-render your main content and navigation.
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — Raw HTML has 3 words and 0 links — this page is built by JavaScript in the browser. Googlebot renders JS but delays it, and most crawlers and AI assistants (ChatGPT, Perplexity, Claude) don't run JavaScript at all, so to them the page looks empty. Server-render or pre-render your main content and navigation.
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — Raw HTML has 3 words and 0 links — this page is built by JavaScript in the browser. Googlebot renders JS but delays it, and most crawlers and AI assistants (ChatGPT, Perplexity, Claude) don't run JavaScript at all, so to them the page looks empty. Server-render or pre-render your main content and navigation.

#### Rich-result schema missing required properties

- Rule: `schema.invalid` · Category: Structured Data · Occurrences: 1

- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — Organization missing: url

#### VideoObject declared but no player element on page

- Rule: `video.no_player` · Category: Video · Occurrences: 1

- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — VideoObject in schema but no <video>/<iframe> player found in the HTML

### Notices (480)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 35

- [https://halon.io/](https://halon.io/) — h3 follows h1 — skips h2
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — h3 follows h1 — skips h2
- [https://halon.io/blog](https://halon.io/blog) — h3 follows h1 — skips h2
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — h3 follows h1 — skips h2
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — h4 follows h1 — skips h2
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — h4 follows h1 — skips h2
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — h3 follows h1 — skips h2
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — h3 follows h1 — skips h2
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — h3 follows h1 — skips h2
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — h3 follows h1 — skips h2
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — h3 follows h1 — skips h2
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — h3 follows h1 — skips h2
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — h4 follows h1 — skips h2
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — h3 follows h1 — skips h2
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — h5 follows h1 — skips h2
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — h3 follows h1 — skips h2
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — h3 follows h1 — skips h2
- [https://halon.io/case-studies](https://halon.io/case-studies) — h3 follows h1 — skips h2
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — h3 follows h1 — skips h2
- [https://halon.io/company](https://halon.io/company) — h3 follows h1 — skips h2
- [https://halon.io/contact](https://halon.io/contact) — h3 follows h1 — skips h2
- [https://halon.io/demo](https://halon.io/demo) — h3 follows h1 — skips h2
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — h3 follows h1 — skips h2
- [https://halon.io/features/](https://halon.io/features/) — h5 follows h2 — skips h3
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — h3 follows h1 — skips h2
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — h3 follows h1 — skips h2
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — h4 follows h1 — skips h2
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — h3 follows h1 — skips h2
- [https://halon.io/old](https://halon.io/old) — h5 follows h2 — skips h3
- [https://halon.io/pricing](https://halon.io/pricing) — h5 follows h3 — skips h4
- [https://halon.io/product](https://halon.io/product) — h5 follows h2 — skips h3
- [https://halon.io/product-old](https://halon.io/product-old) — h5 follows h2 — skips h3
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — h5 follows h3 — skips h4
- [https://halon.io/support](https://halon.io/support) — h4 follows h1 — skips h2
- [https://halon.io/why-halon](https://halon.io/why-halon) — h3 follows h1 — skips h2

#### AMP markup present (no Google Search benefit since Jul 2026)

- Rule: `amp.deprecated` · Category: Amp · Occurrences: 14

- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — this page advertises an AMP variant via <link rel="amphtml"> — Google removed AMP from Search on 1 Jul 2026, so the AMP page earns no ranking or feature benefit. Consider removing the link and 301-redirecting /amp/ URLs to their canonical equivalents.

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

- Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 46

- [https://halon.io/](https://halon.io/) — Cache-Control: s-maxage=0,max-age=0 · cloudflare: BYPASS
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog](https://halon.io/blog) — Cache-Control: no-store, no-cache, must-revalidate, max-age=5
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — Cache-Control: no-store, no-cache, must-revalidate, max-age=5
- [https://halon.io/case-studies](https://halon.io/case-studies) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/company](https://halon.io/company) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/contact](https://halon.io/contact) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/demo](https://halon.io/demo) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/events](https://halon.io/events) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/features/](https://halon.io/features/) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/glossary](https://halon.io/glossary) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — Cache-Control: s-maxage=0,max-age=0 · cloudflare: BYPASS
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/old](https://halon.io/old) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/pricing](https://halon.io/pricing) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/product](https://halon.io/product) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/product-old](https://halon.io/product-old) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/products/protect](https://halon.io/products/protect) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/support](https://halon.io/support) — Cache-Control: s-maxage=0,max-age=5 · cloudflare: BYPASS
- [https://halon.io/testblog](https://halon.io/testblog) — Cache-Control: no-store, no-cache, must-revalidate, max-age=5
- [https://halon.io/why-halon](https://halon.io/why-halon) — Cache-Control: s-maxage=0,max-age=0 · cloudflare: BYPASS

#### Low text-to-HTML ratio

- Rule: `content.low_ratio` · Category: Content · Occurrences: 4

- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — 0.2%
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — 0.2%
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — 0.2%
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — 0.2%

#### Main text is hard to read (low Flesch Reading Ease)

- Rule: `content.readability_poor` · Category: Content · Occurrences: 42

- [https://halon.io/](https://halon.io/) — this page reads as difficult (Flesch Reading Ease 46, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — this page reads as very difficult (Flesch Reading Ease 29, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — this page reads as very difficult (Flesch Reading Ease 15, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog](https://halon.io/blog) — this page reads as difficult (Flesch Reading Ease 48, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — this page reads as difficult (Flesch Reading Ease 48, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — this page reads as difficult (Flesch Reading Ease 42, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — this page reads as difficult (Flesch Reading Ease 44, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — this page reads as difficult (Flesch Reading Ease 47, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — this page reads as very difficult (Flesch Reading Ease 25, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — this page reads as difficult (Flesch Reading Ease 42, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — this page reads as very difficult (Flesch Reading Ease 30, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — this page reads as difficult (Flesch Reading Ease 41, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — this page reads as difficult (Flesch Reading Ease 42, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — this page reads as difficult (Flesch Reading Ease 33, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — this page reads as difficult (Flesch Reading Ease 36, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — this page reads as difficult (Flesch Reading Ease 49, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — this page reads as difficult (Flesch Reading Ease 38, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — this page reads as difficult (Flesch Reading Ease 40, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/case-studies](https://halon.io/case-studies) — this page reads as very difficult (Flesch Reading Ease 23, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — this page reads as very difficult (Flesch Reading Ease 19, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — this page reads as very difficult (Flesch Reading Ease 30, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/company](https://halon.io/company) — this page reads as very difficult (Flesch Reading Ease 25, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/contact](https://halon.io/contact) — this page reads as very difficult (Flesch Reading Ease 30, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/events](https://halon.io/events) — this page reads as difficult (Flesch Reading Ease 33, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/features/](https://halon.io/features/) — this page reads as very difficult (Flesch Reading Ease 22, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/glossary](https://halon.io/glossary) — this page reads as very difficult (Flesch Reading Ease 16, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — this page reads as difficult (Flesch Reading Ease 35, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — this page reads as very difficult (Flesch Reading Ease 22, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — this page reads as very difficult (Flesch Reading Ease 21, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — this page reads as difficult (Flesch Reading Ease 49, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — this page reads as difficult (Flesch Reading Ease 35, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — this page reads as very difficult (Flesch Reading Ease 17, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/old](https://halon.io/old) — this page reads as difficult (Flesch Reading Ease 44, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/pricing](https://halon.io/pricing) — this page reads as difficult (Flesch Reading Ease 33, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/product](https://halon.io/product) — this page reads as very difficult (Flesch Reading Ease 22, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/product-old](https://halon.io/product-old) — this page reads as very difficult (Flesch Reading Ease 22, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/products/protect](https://halon.io/products/protect) — this page reads as very difficult (Flesch Reading Ease 26, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — this page reads as difficult (Flesch Reading Ease 33, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — this page reads as very difficult (Flesch Reading Ease 20, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/support](https://halon.io/support) — this page reads as difficult (Flesch Reading Ease 41, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/testblog](https://halon.io/testblog) — this page reads as very difficult (Flesch Reading Ease 28, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://halon.io/why-halon](https://halon.io/why-halon) — this page reads as very difficult (Flesch Reading Ease 24, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.

#### Title tag and meta description are identical

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

- [https://halon.io/testblog](https://halon.io/testblog) — 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: 5

- [https://halon.io/features/](https://halon.io/features/) — meta description shared by 3 pages: https://halon.io/product, https://halon.io/product-old
- [https://halon.io/pricing](https://halon.io/pricing) — meta description shared by 2 pages: https://halon.io/request-pricing/
- [https://halon.io/product](https://halon.io/product) — meta description shared by 3 pages: https://halon.io/product-old, https://halon.io/features/
- [https://halon.io/product-old](https://halon.io/product-old) — meta description shared by 3 pages: https://halon.io/product, https://halon.io/features/
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — meta description shared by 2 pages: https://halon.io/pricing

#### Article page has no author attribution (E-E-A-T)

- Rule: `eeat.no_author` · Category: Content · Occurrences: 1

- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — this page is marked up as an article but its JSON-LD has no author and no visible byline — add an author to strengthen the E-E-A-T Trust signal

#### Article page has no publication date (freshness / E-E-A-T)

- Rule: `eeat.no_date` · Category: Content · Occurrences: 1

- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — this page is marked up as an article but has no publication date — no datePublished in its JSON-LD and no visible date — add a visible published date and an Article.datePublished so Google can assess freshness

#### Multiple <h1> elements

- Rule: `h1.multiple` · Category: Headings · Occurrences: 3

- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — 2 <h1> elements
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 13 <h1> elements
- [https://halon.io/why-halon](https://halon.io/why-halon) — 3 <h1> elements

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

- Rule: `images.generic_filename` · Category: Images · Occurrences: 1

- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 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.

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 18

- [https://halon.io/](https://halon.io/) — the likely hero/LCP image (microsoft_logo_monocrome.svg) 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://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — the likely hero/LCP image (kpn_white_nospace.svg) 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://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — the likely hero/LCP image (cta-6-features-webbtypsnitt-1-jun-23-2022-10-41-45-12-am.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://halon.io/case-studies](https://halon.io/case-studies) — the likely hero/LCP image (netcore.svg) 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://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — the likely hero/LCP image (kpn_white_nospace.svg) 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://halon.io/contact](https://halon.io/contact) — the likely hero/LCP image (pho%201%2c%20recall%2c%20busy%2c%20hold%2c%20mobile%20phone%2c%20phone%20number%2c%20call%2c%20telephone.svg) 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://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — the likely hero/LCP image (jump-icon.svg) 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://halon.io/events](https://halon.io/events) — the likely hero/LCP image (untitled%20design%20(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.
- [https://halon.io/features/](https://halon.io/features/) — the likely hero/LCP image (halon-website-form-symbols-2.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://halon.io/glossary](https://halon.io/glossary) — the likely hero/LCP image (virus-gradient.svg) 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://halon.io/old](https://halon.io/old) — the likely hero/LCP image (illustration_03_halon_white_f-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.
- [https://halon.io/pricing](https://halon.io/pricing) — the likely hero/LCP image (halon-website-maya-01-1.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.
- [https://halon.io/product](https://halon.io/product) — the likely hero/LCP image (halon-website-form-symbols-2.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://halon.io/product-old](https://halon.io/product-old) — the likely hero/LCP image (halon-website-form-symbols-2.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://halon.io/request-pricing/](https://halon.io/request-pricing/) — the likely hero/LCP image (halon-website-maya-01-1.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.
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — the likely hero/LCP image (e9fe337d-a9a3-4138-beef-875a6ea5c8c0%202.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://halon.io/support](https://halon.io/support) — the likely hero/LCP image (halon-website-maya-01-1.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.
- [https://halon.io/why-halon](https://halon.io/why-halon) — the likely hero/LCP image (microsoft_logo_gray.svg) 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: 46

- [https://halon.io/](https://halon.io/) — 21 of 76 images without width/height
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — 15 of 19 images without width/height
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — 12 of 22 images without width/height
- [https://halon.io/blog](https://halon.io/blog) — 12 of 16 images without width/height
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — 12 of 17 images without width/height
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 12 of 17 images without width/height
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 12 of 17 images without width/height
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 12 of 16 images without width/height
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 12 of 17 images without width/height
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 12 of 16 images without width/height
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 12 of 17 images without width/height
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 12 of 16 images without width/height
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 12 of 16 images without width/height
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 12 of 17 images without width/height
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 12 of 16 images without width/height
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 12 of 18 images without width/height
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 12 of 17 images without width/height
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 12 of 17 images without width/height
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — 12 of 16 images without width/height
- [https://halon.io/case-studies](https://halon.io/case-studies) — 30 of 34 images without width/height
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 17 of 22 images without width/height
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 15 of 19 images without width/height
- [https://halon.io/company](https://halon.io/company) — 34 of 41 images without width/height
- [https://halon.io/contact](https://halon.io/contact) — 14 of 18 images without width/height
- [https://halon.io/demo](https://halon.io/demo) — 12 of 16 images without width/height
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 26 of 37 images without width/height
- [https://halon.io/events](https://halon.io/events) — 13 of 17 images without width/height
- [https://halon.io/features/](https://halon.io/features/) — 34 of 42 images without width/height
- [https://halon.io/glossary](https://halon.io/glossary) — 15 of 19 images without width/height
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 61 of 65 images without width/height
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 16 of 45 images without width/height
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 13 of 48 images without width/height
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 12 of 33 images without width/height
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — 15 of 24 images without width/height
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 12 of 16 images without width/height
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 13 of 30 images without width/height
- [https://halon.io/old](https://halon.io/old) — 23 of 31 images without width/height
- [https://halon.io/pricing](https://halon.io/pricing) — 20 of 24 images without width/height
- [https://halon.io/product](https://halon.io/product) — 34 of 42 images without width/height
- [https://halon.io/product-old](https://halon.io/product-old) — 34 of 42 images without width/height
- [https://halon.io/products/protect](https://halon.io/products/protect) — 29 of 54 images without width/height
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — 20 of 24 images without width/height
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 16 of 20 images without width/height
- [https://halon.io/support](https://halon.io/support) — 16 of 20 images without width/height
- [https://halon.io/testblog](https://halon.io/testblog) — 12 of 16 images without width/height
- [https://halon.io/why-halon](https://halon.io/why-halon) — 22 of 62 images without width/height

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

- Rule: `links.no_anchor_text` · Category: Links · Occurrences: 3

- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — 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://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 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://halon.io/company](https://halon.io/company) — 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: 2

- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 171 chars
- [https://halon.io/glossary](https://halon.io/glossary) — 169 chars

#### Meta description too short

- Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 6

- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — 49 chars
- [https://halon.io/contact](https://halon.io/contact) — 38 chars
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — 41 chars
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — 42 chars
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — 31 chars
- [https://halon.io/testblog](https://halon.io/testblog) — 4 chars

#### Large DOM (over 1500 elements) slows rendering & interaction

- Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 1

- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — the page has 1714 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.

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

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

- [https://halon.io/](https://halon.io/) — 14 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://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — 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://halon.io/abuse-guard](https://halon.io/abuse-guard) — 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://halon.io/blog](https://halon.io/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://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — 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://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 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://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 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://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 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://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 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://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 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://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 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://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 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://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 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://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 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://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 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://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 4 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://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 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://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 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://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — 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://halon.io/case-studies](https://halon.io/case-studies) — 5 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://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 4 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://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 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://halon.io/company](https://halon.io/company) — 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://halon.io/contact](https://halon.io/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://halon.io/demo](https://halon.io/demo) — 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://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 5 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://halon.io/events](https://halon.io/events) — 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://halon.io/features/](https://halon.io/features/) — 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://halon.io/glossary](https://halon.io/glossary) — 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://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 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://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 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://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 18 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://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 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://halon.io/halon-nps](https://halon.io/halon-nps) — 10 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://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 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://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 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://halon.io/old](https://halon.io/old) — 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://halon.io/pricing](https://halon.io/pricing) — 4 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://halon.io/product](https://halon.io/product) — 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://halon.io/product-old](https://halon.io/product-old) — 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://halon.io/products/protect](https://halon.io/products/protect) — 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://halon.io/request-pricing/](https://halon.io/request-pricing/) — 4 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://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 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://halon.io/support](https://halon.io/support) — 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://halon.io/testblog](https://halon.io/testblog) — 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://halon.io/why-halon](https://halon.io/why-halon) — 13 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: 50

- [https://halon.io/](https://halon.io/) — 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://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-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://halon.io/abuse-guard](https://halon.io/abuse-guard) — 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://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — 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://halon.io/blog](https://halon.io/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://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-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://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 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://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 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://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 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://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 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://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 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://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 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://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 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://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 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://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 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://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 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://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 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://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 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://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 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://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — 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://halon.io/case-studies](https://halon.io/case-studies) — 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://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 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://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 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://halon.io/company](https://halon.io/company) — 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://halon.io/contact](https://halon.io/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://halon.io/demo](https://halon.io/demo) — 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://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 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://halon.io/events](https://halon.io/events) — 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://halon.io/features/](https://halon.io/features/) — 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://halon.io/glossary](https://halon.io/glossary) — 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://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 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://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 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://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 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://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — 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://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 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://halon.io/halon-nps](https://halon.io/halon-nps) — 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://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 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://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 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://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — 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://halon.io/old](https://halon.io/old) — 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://halon.io/pricing](https://halon.io/pricing) — 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://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — 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://halon.io/product](https://halon.io/product) — 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://halon.io/product-old](https://halon.io/product-old) — 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://halon.io/products/protect](https://halon.io/products/protect) — 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://halon.io/request-pricing/](https://halon.io/request-pricing/) — 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://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 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://halon.io/support](https://halon.io/support) — 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://halon.io/testblog](https://halon.io/testblog) — 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://halon.io/why-halon](https://halon.io/why-halon) — 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: 43

- [https://halon.io/](https://halon.io/) — 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://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-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://halon.io/abuse-guard](https://halon.io/abuse-guard) — 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://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-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://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 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://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 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://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 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://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 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://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 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://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 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://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 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://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 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://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 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://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 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://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 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://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 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://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 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://halon.io/case-studies](https://halon.io/case-studies) — 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://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 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://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 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://halon.io/company](https://halon.io/company) — 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://halon.io/contact](https://halon.io/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://halon.io/demo](https://halon.io/demo) — 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://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 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://halon.io/events](https://halon.io/events) — 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://halon.io/features/](https://halon.io/features/) — 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://halon.io/glossary](https://halon.io/glossary) — 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://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 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://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 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://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 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://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 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://halon.io/halon-nps](https://halon.io/halon-nps) — 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://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 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://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 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://halon.io/old](https://halon.io/old) — 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://halon.io/pricing](https://halon.io/pricing) — 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://halon.io/product](https://halon.io/product) — 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://halon.io/product-old](https://halon.io/product-old) — 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://halon.io/products/protect](https://halon.io/products/protect) — 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://halon.io/request-pricing/](https://halon.io/request-pricing/) — 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://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 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://halon.io/support](https://halon.io/support) — 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://halon.io/why-halon](https://halon.io/why-halon) — 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: 4

- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — redirects to https://halon.io/case-studies/stadt-straubing
- [https://halon.io/features/](https://halon.io/features/) — redirects to https://halon.io/product
- [https://halon.io/product-old](https://halon.io/product-old) — redirects to https://halon.io/product
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — redirects to https://halon.io/pricing

#### Article schema missing recommended properties (Top Stories / image carousel)

- Rule: `schema.article_incomplete` · Category: Structured Data · Occurrences: 1

- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — Article structured data is missing recommended properties (image, datePublished, author) — these feed Top Stories and image-carousel eligibility. Google defines no required Article properties, so this is advisory: add author, headline, image and datePublished where they apply.

#### Deep page has no BreadcrumbList structured data

- Rule: `schema.breadcrumb_missing` · Category: Structured Data · Occurrences: 2

- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — depth-2 page has structured data but no BreadcrumbList
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — depth-2 page has structured data but no BreadcrumbList

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 45

- [https://halon.io/](https://halon.io/)
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/)
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard)
- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf)
- [https://halon.io/blog](https://halon.io/blog)
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025)
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames)
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports)
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings)
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys)
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution)
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17)
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global)
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco)
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters)
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70)
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership)
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension)
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield)
- [https://halon.io/case-studies](https://halon.io/case-studies)
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle)
- [https://halon.io/company](https://halon.io/company)
- [https://halon.io/contact](https://halon.io/contact)
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations)
- [https://halon.io/events](https://halon.io/events)
- [https://halon.io/features/](https://halon.io/features/)
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo)
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo)
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf)
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta)
- [https://halon.io/halon-nps](https://halon.io/halon-nps)
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy)
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo)
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf)
- [https://halon.io/old](https://halon.io/old)
- [https://halon.io/pricing](https://halon.io/pricing)
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf)
- [https://halon.io/product](https://halon.io/product)
- [https://halon.io/product-old](https://halon.io/product-old)
- [https://halon.io/products/protect](https://halon.io/products/protect)
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/)
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers)
- [https://halon.io/support](https://halon.io/support)
- [https://halon.io/testblog](https://halon.io/testblog)
- [https://halon.io/why-halon](https://halon.io/why-halon)

#### SoftwareApplication schema incomplete (name/offers-or-rating/recommended)

- Rule: `schema.softwareapp_incomplete` · Category: Structured Data · Occurrences: 1

- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — SoftwareApplication structured data is missing required property (offers\|aggregateRating\|review) — complete it to be eligible for the rich result (validate with the Rich Results Test).

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 7

- [https://halon.io/bird-to-halon-migration-overview-pdf](https://halon.io/bird-to-halon-migration-overview-pdf) — X-Content-Type-Options
- [https://halon.io/blog](https://halon.io/blog) — X-Content-Type-Options
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — X-Content-Type-Options
- [https://halon.io/halon-engage-solution-overview-pdf](https://halon.io/halon-engage-solution-overview-pdf) — X-Content-Type-Options
- [https://halon.io/halon-protect-solution-overview-pdf](https://halon.io/halon-protect-solution-overview-pdf) — X-Content-Type-Options
- [https://halon.io/privacy-policy-pdf](https://halon.io/privacy-policy-pdf) — X-Content-Type-Options
- [https://halon.io/testblog](https://halon.io/testblog) — X-Content-Type-Options

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

- Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 46

- [https://halon.io/](https://halon.io/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/about-halon/case-one-com/](https://halon.io/about-halon/case-one-com/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/abuse-guard](https://halon.io/abuse-guard) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog](https://halon.io/blog) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/bfcm-2025](https://halon.io/blog/bfcm-2025) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/case-study-spilgames](https://halon.io/blog/case-study-spilgames) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/considerations-regarding-dmarc-forensic-reports](https://halon.io/blog/considerations-regarding-dmarc-forensic-reports) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/easter-greetings](https://halon.io/blog/easter-greetings) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/halon-and-sap-emarsys](https://halon.io/blog/halon-and-sap-emarsys) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/halon-award-sme-security-solution](https://halon.io/blog/halon-award-sme-security-solution) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/halon-engage-17](https://halon.io/blog/halon-engage-17) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/halon-growth-acceleration-program-scale-global](https://halon.io/blog/halon-growth-acceleration-program-scale-global) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/halon-m3aawg-san-francisco](https://halon.io/blog/halon-m3aawg-san-francisco) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/history-of-anti-spam-and-spam-filters](https://halon.io/blog/history-of-anti-spam-and-spam-filters) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/one-com-reduced-email-costs-70](https://halon.io/blog/one-com-reduced-email-costs-70) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership](https://halon.io/blog/onecom-halon-celebrate-decade-long-partnership) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/smtp-lang-extension](https://halon.io/blog/smtp-lang-extension) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield](https://halon.io/blog/solve-domain-reputation-and-compliance-issues-with-sender-shield) — 9 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/case-studies](https://halon.io/case-studies) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/case-studies-stadt-straubing](https://halon.io/case-studies-stadt-straubing) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/case-studies/duocircle](https://halon.io/case-studies/duocircle) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/company](https://halon.io/company) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/contact](https://halon.io/contact) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/demo](https://halon.io/demo) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/dynamic-email-operations](https://halon.io/dynamic-email-operations) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/events](https://halon.io/events) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/features/](https://halon.io/features/) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/glossary](https://halon.io/glossary) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/glossary/spam-email-threats](https://halon.io/glossary/spam-email-threats) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/halon-classify-demo](https://halon.io/halon-classify-demo) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/halon-engage-demo](https://halon.io/halon-engage-demo) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/halon-nps](https://halon.io/halon-nps) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/halon-privacy-policy](https://halon.io/halon-privacy-policy) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/halon-protect-demo](https://halon.io/halon-protect-demo) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/old](https://halon.io/old) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/pricing](https://halon.io/pricing) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/product](https://halon.io/product) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/product-old](https://halon.io/product-old) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/products/protect](https://halon.io/products/protect) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/request-pricing/](https://halon.io/request-pricing/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers](https://halon.io/solutions/email-infrastructure-for-cloud-email-security-providers) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/support](https://halon.io/support) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/testblog](https://halon.io/testblog) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://halon.io/why-halon](https://halon.io/why-halon) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

#### Indexable page not listed in sitemap

- Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 1

- [https://halon.io/blog/tag/tech](https://halon.io/blog/tag/tech) — indexable but not in sitemap

#### Title tag is identical to the H1 (missed keyword variation)

- Rule: `title.same_as_h1` · Category: Titles · Occurrences: 1

- [https://halon.io/halon-engage/vs/power-mta](https://halon.io/halon-engage/vs/power-mta) — the <title> and the H1 are identical — differentiate them to cover more query variation

#### Title is very short

- Rule: `title.too_short` · Category: Titles · Occurrences: 4

- [https://halon.io/blog](https://halon.io/blog) — 12 chars
- [https://halon.io/events](https://halon.io/events) — 14 chars
- [https://halon.io/testblog](https://halon.io/testblog) — 4 chars
- [https://halon.io/why-halon](https://halon.io/why-halon) — 10 chars

## Checks & coverage

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

- ✗ Agent Readiness — 46 warning(s), 35 notice(s)
- ✓ AI Content — clean
- ✗ Amp — 14 notice(s)
- ✗ Budget — 1 warning(s)
- ✗ Cache — 46 notice(s)
- ✗ Canonical — 3 warning(s)
- ✗ Content — 8 warning(s), 48 notice(s)
- ✗ Crawlability — 1 warning(s), 4 notice(s)
- ✗ Duplicate — 10 warning(s), 5 notice(s)
- ✓ Geo — clean
- ✗ Headings — 2 warning(s), 3 notice(s)
- ✓ Hreflang — clean
- ✗ Images — 1 warning(s), 47 notice(s)
- ✗ Indexability — 1 warning(s)
- ✗ Links — 51 warning(s), 3 notice(s)
- ✗ Meta Description — 9 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 68 warning(s), 158 notice(s)
- ✗ Rendering — 4 warning(s)
- ✓ Robots — clean
- ✗ Security — 53 notice(s)
- ✗ Sitemap — 1 notice(s)
- ✓ Social — clean
- ✗ Structured Data — 1 warning(s), 49 notice(s)
- ✗ Titles — 5 notice(s)
- ✓ URL — clean
- ✗ Video — 1 warning(s)

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

## 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