---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: iana.org
report_url: "https://crawlinx.com/audit/iana.org"
crawl_id: 20260730T051844-d828247c
health_score: 66
generated_at: 2026-08-26T02:37:42Z
total_pages: 50
html_pages: 43
indexable_pages: 43
errors: 1
warnings: 164
notices: 426
---

# SEO audit: iana.org

**Health score: 66/100** — needs attention

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 50 |
| HTML pages | 43 |
| Indexable | 43 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 2675 ms |
| Errors / Warnings / Notices | 1 / 164 / 426 |
| Status codes | 47×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Titles | 98 | 1 | 0 | 38 |
| Meta Description | 74 | 0 | 43 | 0 |
| Canonical | 75 | 0 | 42 | 1 |
| Performance | 75 | 0 | 42 | 117 |
| Links | 86 | 0 | 23 | 0 |
| Content | 98 | 0 | 4 | 37 |
| Images | 98 | 0 | 4 | 42 |
| Crawlability | 99 | 0 | 2 | 5 |
| Mobile | 99 | 0 | 2 | 42 |
| Agent Readiness | 99 | 0 | 1 | 7 |
| Headings | 99 | 0 | 1 | 1 |
| AI Content | 100 | 0 | 0 | 3 |
| Cache | 100 | 0 | 0 | 3 |
| Social | 100 | 0 | 0 | 86 |
| Structured Data | 100 | 0 | 0 | 43 |
| URL | 100 | 0 | 0 | 1 |

## Issues

### Errors (1)

#### Missing or empty <title>

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

- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/)

### Warnings (164)

#### Control has no accessible name

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

- [http://iana.org/audits](http://iana.org/audits) — 1 button/link(s) with no text or aria-label — an agent can't target them

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 42

- [http://iana.org/audits](http://iana.org/audits)
- [http://iana.org/reviews](http://iana.org/reviews)
- [http://www.iana.org/about](http://www.iana.org/about)
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization)
- [http://www.iana.org/archive](http://www.iana.org/archive)
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html)
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports)
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp)
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply)
- [http://www.iana.org/contact](http://www.iana.org/contact)
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec)
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62)
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files)
- [http://www.iana.org/domains](http://www.iana.org/domains)
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa)
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables)
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved)
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root)
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db)
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html)
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files)
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4)
- [http://www.iana.org/help](http://www.iana.org/help)
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse)
- [http://www.iana.org/news](http://www.iana.org/news)
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718)
- [http://www.iana.org/numbers](http://www.iana.org/numbers)
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/)
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/)
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries)
- [http://www.iana.org/performance](http://www.iana.org/performance)
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics)
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06)
- [http://www.iana.org/protocols](http://www.iana.org/protocols)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply)
- [http://www.iana.org/reports](http://www.iana.org/reports)
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones)
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases)
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example)

#### Thin content (low word count)

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

- [http://www.iana.org/](http://www.iana.org/) — 183 words
- [http://www.iana.org/contact](http://www.iana.org/contact) — 129 words
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — 192 words
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — 186 words

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 1

- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply)

#### Images missing alt text

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

- [http://iana.org/audits](http://iana.org/audits) — 1 of 4 images missing alt
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — 11 of 12 images missing alt
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — 62 of 63 images missing alt
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 10 of 11 images missing alt

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 23

- [http://iana.org/audits](http://iana.org/audits) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://iana.org/reviews](http://iana.org/reviews) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/about](http://www.iana.org/about) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/archive](http://www.iana.org/archive) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/archive](http://www.iana.org/archive) — http://www.iana.org/archive/ntia-contract → http://www.iana.org/archive/ntia-contract
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/contact](http://www.iana.org/contact) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — http://www.iana.org/go/rfc2606 → https://datatracker.ietf.org/doc/html/rfc2606 (off-site)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — http://www.iana.org/go/rfc6761 → https://datatracker.ietf.org/doc/html/rfc6761 (off-site)
- [http://www.iana.org/help](http://www.iana.org/help) — http://www.iana.org/help/example-domains → http://www.iana.org/help/example-domains
- [http://www.iana.org/news](http://www.iana.org/news) — http://iana.org/audits → http://www.iana.org/about/audits
- [http://www.iana.org/news](http://www.iana.org/news) — http://iana.org/reviews → http://www.iana.org/archive/ntia-contract
- [http://www.iana.org/news](http://www.iana.org/news) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/performance](http://www.iana.org/performance) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — http://www.iana.org/go/rfc6761 → https://datatracker.ietf.org/doc/html/rfc6761 (off-site)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — http://www.iana.org/assignments/enterprise-numbers/assignment/apply → http://www.iana.org/assignments/enterprise-numbers/assignment/apply/
- [http://www.iana.org/reports](http://www.iana.org/reports) — http://www.iana.org/about/audits → http://www.iana.org/about/audits
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — http://www.iana.org/time-zones/repository/tzdb/NEWS → https://data.iana.org/time-zones/tzdb/NEWS (off-site)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — http://www.iana.org/go/rfc2606 → https://datatracker.ietf.org/doc/html/rfc2606 (off-site)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — http://www.iana.org/go/rfc6761 → https://datatracker.ietf.org/doc/html/rfc6761 (off-site)

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 43

- [http://iana.org/audits](http://iana.org/audits)
- [http://iana.org/reviews](http://iana.org/reviews)
- [http://www.iana.org/](http://www.iana.org/)
- [http://www.iana.org/about](http://www.iana.org/about)
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization)
- [http://www.iana.org/archive](http://www.iana.org/archive)
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html)
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports)
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp)
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply)
- [http://www.iana.org/contact](http://www.iana.org/contact)
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec)
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62)
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files)
- [http://www.iana.org/domains](http://www.iana.org/domains)
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa)
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables)
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved)
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root)
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db)
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html)
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files)
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4)
- [http://www.iana.org/help](http://www.iana.org/help)
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse)
- [http://www.iana.org/news](http://www.iana.org/news)
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718)
- [http://www.iana.org/numbers](http://www.iana.org/numbers)
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/)
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/)
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries)
- [http://www.iana.org/performance](http://www.iana.org/performance)
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics)
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06)
- [http://www.iana.org/protocols](http://www.iana.org/protocols)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply)
- [http://www.iana.org/reports](http://www.iana.org/reports)
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones)
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases)
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example)

#### Missing viewport meta tag

- Rule: `mobile.viewport_missing` · Category: Mobile · Occurrences: 2

- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml)

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 42

- [http://iana.org/audits](http://iana.org/audits) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://iana.org/reviews](http://iana.org/reviews) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/](http://www.iana.org/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/about](http://www.iana.org/about) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/archive](http://www.iana.org/archive) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/contact](http://www.iana.org/contact) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains](http://www.iana.org/domains) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/help](http://www.iana.org/help) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/news](http://www.iana.org/news) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/performance](http://www.iana.org/performance) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/reports](http://www.iana.org/reports) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — 1 render-blocking <script> in <head> (add defer/async or use type=module)

#### Redirect chain (multiple hops)

- Rule: `redirect.chain` · Category: Crawlability · Occurrences: 2

- [http://iana.org/audits](http://iana.org/audits) — 2 hops ending at http://www.iana.org/about/audits
- [http://iana.org/reviews](http://iana.org/reviews) — 2 hops ending at http://www.iana.org/archive/ntia-contract

### Notices (426)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 2

- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — h6 follows h3 — skips h4
- [http://www.iana.org/news](http://www.iana.org/news) — h3 follows h1 — skips h2

#### No llms.txt for AI agents

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

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

#### No main landmark for AI agents

- Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 4

- [http://www.iana.org/](http://www.iana.org/) — add a <main> element (or role=main) around the primary content
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — add a <main> element (or role=main) around the primary content
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — add a <main> element (or role=main) around the primary content
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — add a <main> element (or role=main) around the primary content

#### Low text variety (weak AI-content signal)

- Rule: `ai.low_variety` · Category: AI Content · Occurrences: 1

- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — This page's writing is unusually uniform — even sentence lengths (variation 0.35) and repetitive vocabulary (diversity 0.36). That pattern is weakly associated with machine-generated or templated text, but it is not proof: technical and non-native writing can look the same, and AI detectors are unreliable. Treat it as a nudge to check the page adds original value — not as a verdict.

#### Uniform sentence length (scaled-content hygiene signal)

- Rule: `ai.uniform_sentence_length` · Category: AI Content · Occurrences: 2

- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — sentence lengths on this page are unusually uniform (standard deviation 1.9 words, below 4) — a stylistically flat rhythm that correlates with templated or unedited content and low editorial effort. Vary sentence length and add specifics on a re-read. This is a content-quality nudge; it does not determine AI authorship.
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — sentence lengths on this page are unusually uniform (standard deviation 2.7 words, below 4) — a stylistically flat rhythm that correlates with templated or unedited content and low editorial effort. Vary sentence length and add specifics on a re-read. This is a content-quality nudge; it does not determine AI authorship.

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

- Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 3

- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — Cache-Control: public, s-maxage=1800, max-age=3600 · cloudflare: BYPASS
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — Cache-Control: no-store · cloudflare: BYPASS
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — Cache-Control: public, s-maxage=1986, max-age=6283 · cloudflare: BYPASS

#### Canonical points to a different URL

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

- [http://www.iana.org/](http://www.iana.org/) — canonical=https://iana.org/

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

- Rule: `content.readability_poor` · Category: Content · Occurrences: 37

- [http://iana.org/audits](http://iana.org/audits) — this page reads as very difficult (Flesch Reading Ease 14, 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.
- [http://iana.org/reviews](http://iana.org/reviews) — this page reads as very difficult (Flesch Reading Ease 14, 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.
- [http://www.iana.org/](http://www.iana.org/) — 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.
- [http://www.iana.org/about](http://www.iana.org/about) — this page reads as very difficult (Flesch Reading Ease 14, 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.
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — this page reads as very difficult (Flesch Reading Ease 14, 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.
- [http://www.iana.org/archive](http://www.iana.org/archive) — 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.
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — this page reads as difficult (Flesch Reading Ease 32, 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.
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — this page reads as very difficult (Flesch Reading Ease -7, 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.
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — 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.
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — this page reads as very difficult (Flesch Reading Ease -13, 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.
- [http://www.iana.org/contact](http://www.iana.org/contact) — this page reads as very difficult (Flesch Reading Ease 12, 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.
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — 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.
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — 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.
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files) — this page reads as difficult (Flesch Reading Ease 37, 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.
- [http://www.iana.org/domains](http://www.iana.org/domains) — 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.
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — this page reads as very difficult (Flesch Reading Ease 27, 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.
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int) — this page reads as very difficult (Flesch Reading Ease 4, 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.
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — 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.
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — 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.
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — 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.
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — 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.
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — 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.
- [http://www.iana.org/help](http://www.iana.org/help) — 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.
- [http://www.iana.org/news](http://www.iana.org/news) — 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.
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — 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.
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — 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.
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — this page reads as very difficult (Flesch Reading Ease 13, 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.
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/) — this page reads as very difficult (Flesch Reading Ease 18, 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.
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — 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.
- [http://www.iana.org/performance](http://www.iana.org/performance) — this page reads as very difficult (Flesch Reading Ease 27, 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.
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics) — 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.
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — this page reads as very difficult (Flesch Reading Ease 13, 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.
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — this page reads as difficult (Flesch Reading Ease 43, 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.
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — 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.
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — this page reads as difficult (Flesch Reading Ease 34, 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.
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c) — 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://www.iana.org/domains/example](https://www.iana.org/domains/example) — 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.

#### Multiple <h1> elements

- Rule: `h1.multiple` · Category: Headings · Occurrences: 1

- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 2 <h1> elements

#### Missing html lang attribute

- Rule: `i18n.lang_missing` · Category: Mobile · Occurrences: 42

- [http://iana.org/audits](http://iana.org/audits)
- [http://iana.org/reviews](http://iana.org/reviews)
- [http://www.iana.org/](http://www.iana.org/)
- [http://www.iana.org/about](http://www.iana.org/about)
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization)
- [http://www.iana.org/archive](http://www.iana.org/archive)
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html)
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports)
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp)
- [http://www.iana.org/contact](http://www.iana.org/contact)
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec)
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62)
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files)
- [http://www.iana.org/domains](http://www.iana.org/domains)
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa)
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables)
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved)
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root)
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db)
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html)
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files)
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4)
- [http://www.iana.org/help](http://www.iana.org/help)
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse)
- [http://www.iana.org/news](http://www.iana.org/news)
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718)
- [http://www.iana.org/numbers](http://www.iana.org/numbers)
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/)
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/)
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries)
- [http://www.iana.org/performance](http://www.iana.org/performance)
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics)
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06)
- [http://www.iana.org/protocols](http://www.iana.org/protocols)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply)
- [http://www.iana.org/reports](http://www.iana.org/reports)
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones)
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases)
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example)

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 42

- [http://iana.org/audits](http://iana.org/audits) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://iana.org/reviews](http://iana.org/reviews) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/about](http://www.iana.org/about) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/archive](http://www.iana.org/archive) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — the likely hero/LCP image (iana-logo-header.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.
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — the likely hero/LCP image (iana-logo-left-243x72.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.
- [http://www.iana.org/contact](http://www.iana.org/contact) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains](http://www.iana.org/domains) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/help](http://www.iana.org/help) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/news](http://www.iana.org/news) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/performance](http://www.iana.org/performance) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/reports](http://www.iana.org/reports) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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.
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — the likely hero/LCP image (iana-logo-header.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://www.iana.org/domains/example](https://www.iana.org/domains/example) — the likely hero/LCP image (iana-logo-header.426b3ac01d35.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: 42

- [http://iana.org/audits](http://iana.org/audits) — 3 of 4 images without width/height
- [http://iana.org/reviews](http://iana.org/reviews) — 1 of 1 images without width/height
- [http://www.iana.org/about](http://www.iana.org/about) — 6 of 6 images without width/height
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — 6 of 6 images without width/height
- [http://www.iana.org/archive](http://www.iana.org/archive) — 6 of 6 images without width/height
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — 1 of 1 images without width/height
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — 1 of 1 images without width/height
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — 12 of 12 images without width/height
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — 2 of 2 images without width/height
- [http://www.iana.org/contact](http://www.iana.org/contact) — 1 of 1 images without width/height
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — 9 of 9 images without width/height
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — 1 of 1 images without width/height
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files) — 1 of 1 images without width/height
- [http://www.iana.org/domains](http://www.iana.org/domains) — 7 of 7 images without width/height
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — 1 of 1 images without width/height
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — 1 of 1 images without width/height
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int) — 3 of 3 images without width/height
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — 1 of 1 images without width/height
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — 6 of 6 images without width/height
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — 1 of 1 images without width/height
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html) — 1 of 1 images without width/height
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — 5 of 5 images without width/height
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — 1 of 1 images without width/height
- [http://www.iana.org/help](http://www.iana.org/help) — 1 of 1 images without width/height
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse) — 1 of 1 images without width/height
- [http://www.iana.org/news](http://www.iana.org/news) — 6 of 6 images without width/height
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — 1 of 1 images without width/height
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — 6 of 6 images without width/height
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — 1 of 1 images without width/height
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/) — 1 of 1 images without width/height
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — 1 of 1 images without width/height
- [http://www.iana.org/performance](http://www.iana.org/performance) — 9 of 9 images without width/height
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics) — 2 of 2 images without width/height
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — 63 of 63 images without width/height
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — 2 of 2 images without width/height
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — 1 of 1 images without width/height
- [http://www.iana.org/reports](http://www.iana.org/reports) — 5 of 5 images without width/height
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — 9 of 9 images without width/height
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — 1 of 1 images without width/height
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c) — 4 of 4 images without width/height
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 11 of 11 images without width/height
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — 1 of 1 images without width/height

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 43

- [http://iana.org/audits](http://iana.org/audits) — og:title, og:description, og:image
- [http://iana.org/reviews](http://iana.org/reviews) — og:title, og:description, og:image
- [http://www.iana.org/](http://www.iana.org/) — og:title, og:description, og:image
- [http://www.iana.org/about](http://www.iana.org/about) — og:title, og:description, og:image
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — og:title, og:description, og:image
- [http://www.iana.org/archive](http://www.iana.org/archive) — og:title, og:description, og:image
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — og:title, og:description, og:image
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — og:title, og:description, og:image
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — og:title, og:description, og:image
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — og:title, og:description, og:image
- [http://www.iana.org/contact](http://www.iana.org/contact) — og:title, og:description, og:image
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — og:title, og:description, og:image
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — og:title, og:description, og:image
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files) — og:title, og:description, og:image
- [http://www.iana.org/domains](http://www.iana.org/domains) — og:title, og:description, og:image
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — og:title, og:description, og:image
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — og:title, og:description, og:image
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int) — og:title, og:description, og:image
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — og:title, og:description, og:image
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — og:title, og:description, og:image
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — og:title, og:description, og:image
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html) — og:title, og:description, og:image
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — og:title, og:description, og:image
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — og:title, og:description, og:image
- [http://www.iana.org/help](http://www.iana.org/help) — og:title, og:description, og:image
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse) — og:title, og:description, og:image
- [http://www.iana.org/news](http://www.iana.org/news) — og:title, og:description, og:image
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — og:title, og:description, og:image
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — og:title, og:description, og:image
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — og:title, og:description, og:image
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/) — og:title, og:description, og:image
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — og:title, og:description, og:image
- [http://www.iana.org/performance](http://www.iana.org/performance) — og:title, og:description, og:image
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics) — og:title, og:description, og:image
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — og:title, og:description, og:image
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — og:title, og:description, og:image
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — og:title, og:description, og:image
- [http://www.iana.org/reports](http://www.iana.org/reports) — og:title, og:description, og:image
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — og:title, og:description, og:image
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — og:title, og:description, og:image
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c) — og:title, og:description, og:image
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — og:title, og:description, og:image
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — og:title, og:description, og:image

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

- Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 6

- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — the page has 89049 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.
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — the page has 9731 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.
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — the page has 34481 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.
- [http://www.iana.org/reports](http://www.iana.org/reports) — the page has 9276 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.
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — the page has 2399 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.
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — the page has 3043 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: 3

- [http://iana.org/audits](http://iana.org/audits) — 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.
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — 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://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 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.

#### Large HTML document

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

- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — 2.4 MiB

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

- Rule: `perf.no_etag` · Category: Performance · Occurrences: 43

- [http://iana.org/audits](http://iana.org/audits) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://iana.org/reviews](http://iana.org/reviews) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/](http://www.iana.org/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/about](http://www.iana.org/about) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/archive](http://www.iana.org/archive) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-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.
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/contact](http://www.iana.org/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.
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains](http://www.iana.org/domains) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/help](http://www.iana.org/help) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/news](http://www.iana.org/news) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/performance](http://www.iana.org/performance) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/reports](http://www.iana.org/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.
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c) — 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://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 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://www.iana.org/domains/example](https://www.iana.org/domains/example) — 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: 3

- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — 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.

#### Slow server response

- Rule: `perf.slow_response` · Category: Performance · Occurrences: 19

- [http://www.iana.org/about](http://www.iana.org/about) — 3425 ms
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — 3089 ms
- [http://www.iana.org/about/presentations/20100829-gerich-ianaupdate.pdf](http://www.iana.org/about/presentations/20100829-gerich-ianaupdate.pdf) — 3505 ms
- [http://www.iana.org/archive/internet-monthly-reports/1991/imr-jan91.txt](http://www.iana.org/archive/internet-monthly-reports/1991/imr-jan91.txt) — 3042 ms
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — 3045 ms
- [http://www.iana.org/contact](http://www.iana.org/contact) — 3037 ms
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — 3303 ms
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — 3257 ms
- [http://www.iana.org/news.atom](http://www.iana.org/news.atom) — 3383 ms
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — 3046 ms
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — 3313 ms
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/) — 3130 ms
- [http://www.iana.org/performance](http://www.iana.org/performance) — 3047 ms
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06) — 3084 ms
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — 6753 ms
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply) — 3072 ms
- [http://www.iana.org/reports](http://www.iana.org/reports) — 3018 ms
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — 4797 ms
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml) — 3115 ms

#### URL redirects to another URL

- Rule: `redirect.single` · Category: Crawlability · Occurrences: 5

- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply) — redirects to http://www.iana.org/assignments/enterprise-numbers/assignment/apply/
- [http://www.iana.org/go/rfc2606](http://www.iana.org/go/rfc2606) — redirects to https://datatracker.ietf.org/doc/html/rfc2606
- [http://www.iana.org/go/rfc6761](http://www.iana.org/go/rfc6761) — redirects to https://datatracker.ietf.org/doc/html/rfc6761
- [http://www.iana.org/time-zones/repository/tzdb/NEWS](http://www.iana.org/time-zones/repository/tzdb/NEWS) — redirects to https://data.iana.org/time-zones/tzdb/NEWS
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — redirects to http://www.iana.org/help/example-domains

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 43

- [http://iana.org/audits](http://iana.org/audits)
- [http://iana.org/reviews](http://iana.org/reviews)
- [http://www.iana.org/](http://www.iana.org/)
- [http://www.iana.org/about](http://www.iana.org/about)
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization)
- [http://www.iana.org/archive](http://www.iana.org/archive)
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html)
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports)
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp)
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply)
- [http://www.iana.org/contact](http://www.iana.org/contact)
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec)
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62)
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files)
- [http://www.iana.org/domains](http://www.iana.org/domains)
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa)
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables)
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved)
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root)
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db)
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html)
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files)
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4)
- [http://www.iana.org/help](http://www.iana.org/help)
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse)
- [http://www.iana.org/news](http://www.iana.org/news)
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718)
- [http://www.iana.org/numbers](http://www.iana.org/numbers)
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/)
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/)
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries)
- [http://www.iana.org/performance](http://www.iana.org/performance)
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics)
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06)
- [http://www.iana.org/protocols](http://www.iana.org/protocols)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply)
- [http://www.iana.org/reports](http://www.iana.org/reports)
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones)
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases)
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example)

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

- Rule: `title.same_as_h1` · Category: Titles · Occurrences: 28

- [http://iana.org/audits](http://iana.org/audits) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/](http://www.iana.org/) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/archive](http://www.iana.org/archive) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/contact](http://www.iana.org/contact) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/domains](http://www.iana.org/domains) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/help](http://www.iana.org/help) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/news](http://www.iana.org/news) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/numbers](http://www.iana.org/numbers) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/performance](http://www.iana.org/performance) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/protocols](http://www.iana.org/protocols) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/reports](http://www.iana.org/reports) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases) — the <title> and the H1 are identical — differentiate them to cover more query variation
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example) — 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: 10

- [http://iana.org/audits](http://iana.org/audits) — 14 chars
- [http://www.iana.org/about](http://www.iana.org/about) — 8 chars
- [http://www.iana.org/archive](http://www.iana.org/archive) — 7 chars
- [http://www.iana.org/contact](http://www.iana.org/contact) — 10 chars
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa) — 12 chars
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files) — 10 chars
- [http://www.iana.org/news](http://www.iana.org/news) — 4 chars
- [http://www.iana.org/performance](http://www.iana.org/performance) — 11 chars
- [http://www.iana.org/reports](http://www.iana.org/reports) — 7 chars
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones) — 10 chars

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 43

- [http://iana.org/audits](http://iana.org/audits)
- [http://iana.org/reviews](http://iana.org/reviews)
- [http://www.iana.org/](http://www.iana.org/)
- [http://www.iana.org/about](http://www.iana.org/about)
- [http://www.iana.org/about/organization](http://www.iana.org/about/organization)
- [http://www.iana.org/archive](http://www.iana.org/archive)
- [http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html](http://www.iana.org/archive/cctld-news/cctld-news-feb2003.html)
- [http://www.iana.org/archive/internet-monthly-reports](http://www.iana.org/archive/internet-monthly-reports)
- [http://www.iana.org/assignments/ancp](http://www.iana.org/assignments/ancp)
- [http://www.iana.org/assignments/enterprise-numbers/assignment/apply](http://www.iana.org/assignments/enterprise-numbers/assignment/apply)
- [http://www.iana.org/contact](http://www.iana.org/contact)
- [http://www.iana.org/dnssec](http://www.iana.org/dnssec)
- [http://www.iana.org/dnssec/ceremonies/62](http://www.iana.org/dnssec/ceremonies/62)
- [http://www.iana.org/dnssec/files](http://www.iana.org/dnssec/files)
- [http://www.iana.org/domains](http://www.iana.org/domains)
- [http://www.iana.org/domains/arpa](http://www.iana.org/domains/arpa)
- [http://www.iana.org/domains/idn-tables](http://www.iana.org/domains/idn-tables)
- [http://www.iana.org/domains/int](http://www.iana.org/domains/int)
- [http://www.iana.org/domains/reserved](http://www.iana.org/domains/reserved)
- [http://www.iana.org/domains/root](http://www.iana.org/domains/root)
- [http://www.iana.org/domains/root/db](http://www.iana.org/domains/root/db)
- [http://www.iana.org/domains/root/db/aaa.html](http://www.iana.org/domains/root/db/aaa.html)
- [http://www.iana.org/domains/root/files](http://www.iana.org/domains/root/files)
- [http://www.iana.org/form/multicast-ipv4](http://www.iana.org/form/multicast-ipv4)
- [http://www.iana.org/help](http://www.iana.org/help)
- [http://www.iana.org/help/abuse](http://www.iana.org/help/abuse)
- [http://www.iana.org/news](http://www.iana.org/news)
- [http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718](http://www.iana.org/news/2026/update-dnssec-icannbundle-rfc9718)
- [http://www.iana.org/numbers](http://www.iana.org/numbers)
- [http://www.iana.org/numbers/allocations/](http://www.iana.org/numbers/allocations/)
- [http://www.iana.org/numbers/allocations/afrinic/ipv6/](http://www.iana.org/numbers/allocations/afrinic/ipv6/)
- [http://www.iana.org/numbers/registries](http://www.iana.org/numbers/registries)
- [http://www.iana.org/performance](http://www.iana.org/performance)
- [http://www.iana.org/performance/ietf-statistics](http://www.iana.org/performance/ietf-statistics)
- [http://www.iana.org/performance/ietf-statistics/2026-06](http://www.iana.org/performance/ietf-statistics/2026-06)
- [http://www.iana.org/protocols](http://www.iana.org/protocols)
- [http://www.iana.org/protocols/apply](http://www.iana.org/protocols/apply)
- [http://www.iana.org/reports](http://www.iana.org/reports)
- [http://www.iana.org/time-zones](http://www.iana.org/time-zones)
- [http://www.iana.org/time-zones/releases](http://www.iana.org/time-zones/releases)
- [http://www.iana.org/time-zones/releases/2026c](http://www.iana.org/time-zones/releases/2026c)
- [https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml](https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml)
- [https://www.iana.org/domains/example](https://www.iana.org/domains/example)

#### Uppercase letters in URL path

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

- [http://www.iana.org/time-zones/repository/tzdb/NEWS](http://www.iana.org/time-zones/repository/tzdb/NEWS)

## Checks & coverage

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

- ✗ Agent Readiness — 1 warning(s), 7 notice(s)
- ✗ AI Content — 3 notice(s)
- ✓ Amp — clean
- ✓ Budget — clean
- ✗ Cache — 3 notice(s)
- ✗ Canonical — 42 warning(s), 1 notice(s)
- ✗ Content — 4 warning(s), 37 notice(s)
- ✗ Crawlability — 2 warning(s), 5 notice(s)
- ✓ Duplicate — clean
- ✓ Geo — clean
- ✗ Headings — 1 warning(s), 1 notice(s)
- ✓ Hreflang — clean
- ✗ Images — 4 warning(s), 42 notice(s)
- ✓ Indexability — clean
- ✗ Links — 23 warning(s)
- ✗ Meta Description — 43 warning(s)
- ✗ Mobile — 2 warning(s), 42 notice(s)
- ✗ Performance — 42 warning(s), 117 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✓ Security — clean
- ✓ Sitemap — clean
- ✗ Social — 86 notice(s)
- ✗ Structured Data — 43 notice(s)
- ✗ Titles — 1 error(s), 38 notice(s)
- ✗ URL — 1 notice(s)
- ✓ Video — clean

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

## 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