The National Archives (nationalarchives.gov.uk) operates as a leading public infrastructure institution, offering authoritative access to the UK’s historical records and governmental archives. With a Global SEODiff Score of 80 and an AI Readiness GEO score of 82, the site demonstrates strong foundational SEO and AI accessibility, positioning it well for discoverability in both traditional and emerging search environments. However, its ACRI Grade of C and ACRI Score of 62 indicate room for improvement in core user experience and content clarity, particularly given the site’s mission-critical role in public information access. The Architecture Score of 93 reflects excellent internal linking structure and clear site hierarchy, while extractability at 86 confirms strong data accessibility for crawlers and AI agents.
The site excels in technical robustness: it features fast TTFB (523ms), no ghost content, and open bot access for major AI crawlers including GPTbot, Claudebot, and CCBot. It also benefits from HSTS enforcement and declared sitemap, enhancing security and crawl efficiency. Despite this, content integrity (43) and retrieval robustness (50) are notably low, signaling issues with content clarity, semantic coherence, and consistent information retrieval. The word count of just 409 and useful text bytes of 9,490 suggest significant content dilution, with 6.5x token bloat ratio indicating excessive non-semantic markup or redundant code. Structured data is present but limited—only Organization and Breadcrumb schema are implemented, missing opportunities in Article, FAQ, and Product types that could enhance AI and SERP visibility.
Architecturally, the site shows strong internal link distribution with 45 internal links and 11 external links, supporting equitable link equity flow, though deeper crawl analysis would help assess orphaned or underlinked pages. The low Tranco Rank (4,996) suggests moderate global traffic but strong regional relevance. To elevate performance, the site should prioritize semantic structure improvements, content densification, and schema enrichment. Addressing token bloat and increasing meaningful content volume will directly improve AI Trust Score (13.6) and content integrity, unlocking higher visibility in AI-driven search and ensuring long-term sustainability of public information access.
🧮 Score Transparency — How is this calculated?
📊 ACRI Sub-Scores (AI Readiness Detail)
nationalarchives.gov.uk punches above its weight in AI — AI visibility exceeds Google ranking. This is a competitive moat worth protecting. ACRI measures technical crawler readiness. Read the methodology →
Why nationalarchives.gov.uk ranks here
Fastest improvements
- Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
- Create an
llms.txtfile so AI crawlers can discover your content structure without heavy crawling. Generate llms.txt → - Run a full entropy audit to find which DOM regions waste the most tokens. Run Entropy Audit →
Traditional SEO
40/100 25 % of Global Score 🟢 High Confidence📝 Title Tag
Optimal range: 30–60 characters for SERP display.
📋 Meta Description
Optimal range: 120–160 characters for snippet control.
🔤 Heading Hierarchy
- ✓ Exactly 1 <h1> tag — found 1
- ✓ Has <h2> headings — found 14
- ✗ <h2> not before <h1>
🔍 Indexability
- ✓ Canonical tag present →
https://www.nationalarchives.gov.uk/ - ✓ No noindex directive
- ✓ Meta viewport set
- ✓ HTML lang attribute →
en - ➖ Hreflang tags — N/A (single language site)
- ✓ Googlebot allowed by robots.txt
🌐 Social / OpenGraph
- ✓ og:title — The National Archives
- ✓ og:description — Explore 1,000 years of history
- ✗ og:image
- ✓ twitter:card — summary
📐 How the SEO Pillar score is calculated
SEO Pillar = Title (20 pts) + Meta Desc (20 pts) + Heading Hierarchy (20 pts) + Indexability (20 pts) + Social/OG (20 pts)
Each sub-score is derived from the checks above. Canonical tag, lang attribute, og:image, and a single H1 are the highest-impact items.
AI Readiness / GEO
78/100 40 % of Global Score 🟢 High ConfidenceThis pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.
Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.
🤖 Bot Access Matrix
📊 Structure & Information Density Docs
🏷️ Schema Health Docs
Schema Coverage Map
📐 AI Efficiency Metrics Docs
Token Bloat Research
Multimodal Readiness
TDM Rights
🔥 Structural Entropy Check Research
🔬 AI-Crawler Simulation
See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
AI Answer Preview
NEWSee how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.
The LLM Interpretation
AI-VERIFIEDSEODiff AI analyzed the extracted content of nationalarchives.gov.uk and produced this structured business intelligence. Fields marked SEMANTIC VOID indicate information the AI could not find — a critical gap in your site’s machine-readability.
🔧 Tech Stack
Performance & Speed
84/100 20 % of Global Score 🟢 High Confidence⏱️ Time to First Byte
Google considers <200 ms "good". AI crawlers may have even shorter timeouts.
📦 Page Weight
DOM nodes
HTML payload
🗄️ Cache & CDN
- ✗ Cache-Control header
- ✗ CDN cache status
- ✗ CDN detected
🔬 Tracker Tax
tracker scripts
third-party domains
token overhead
📐 How the Performance Pillar score is calculated
Perf Pillar = TTFB (35 pts) + Page Weight (25 pts) + Cache/CDN (20 pts) + Tracker Tax (20 pts)
TTFB <200 ms = full marks. DOM >3000 or payload >300 KB incurs heavy penalties. Tracker scripts beyond 5 reduce score.
Architecture & Trust
86/100 15 % of Global Score 🟢 High Confidence🗺️ Sitemap & Robots
- ✗ Sitemap declared in robots.txt
- ✓ Googlebot allowed
- ✓ GPTBot allowed
- ✓ ClaudeBot allowed
🔗 Linking
internal links
external links
🔒 Security & Trust
- ✓ HSTS header (Strict-Transport-Security)
- ✓ Content-Security-Policy header
- ✓ HTTP status 200 OK (got 200)
♿ Accessibility Signals
- ✓ HTML lang attribute → en
- ✓ Meta viewport for mobile
- ✓ Single H1 for screen readers
📐 How the Architecture Pillar score is calculated
Arch Pillar = Sitemap & Robots (30 pts) + Linking (25 pts) + Security (25 pts) + Accessibility (20 pts)
Having a valid sitemap, allowing AI bots, HSTS, and a good internal link count are the highest-impact items.
🏅 AI-Verified Trust Badge
Your site scores 52/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.
<a href="https://seodiff.io/radar/domains/nationalarchives.gov.uk" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=nationalarchives.gov.uk" alt="AI-Verified by SEODiff" width="280" height="52"></a>
💡 Paste in your site footer, GitHub README, or email signature. Badge updates automatically as your score changes.
� Deep Crawl Analysis 662 pages · Deep-10
| Page | Type | ACRI | Token Bloat | Words | Status |
|---|---|---|---|---|---|
| pricing | 95 | 4.8× | 4446 | 💰 Pricing | |
| pricing | 95 | 4.5× | 4157 | 💰 Pricing | |
| pricing | 95 | 4.7× | 3977 | 💰 Pricing | |
| other | 95 | 2.6× | 8473 | ✓ | |
| pricing | 95 | 2.5× | 7986 | 💰 Pricing | |
| other | 95 | 4.8× | 4104 | ✓ | |
| other | 95 | 3.2× | 5715 | ✓ | |
| other | 95 | 2.4× | 8560 | ✓ | |
| other | 95 | 2.7× | 6806 | ✓ | |
| other | 95 | 2.9× | 6406 | ✓ | |
| product | 90 | 6.9× | 2030 | ✓ | |
| pricing | 90 | 5.4× | 3793 | 💰 Pricing | |
| other | 90 | 7.7× | 2160 | ✓ | |
| pricing | 90 | 8.2× | 1937 | 💰 Pricing | |
| other | 90 | 9.6× | 1634 | ✓ | |
| other | 90 | 10.0× | 1444 | ✓ | |
| other | 90 | 9.4× | 1753 | ✓ | |
| auth | 90 | 8.4× | 1870 | ✓ | |
| other | 90 | 8.1× | 2141 | ✓ | |
| other | 90 | 6.0× | 3000 | ✓ |
| Path | Pages | Avg ACRI | Ghost % | Bloat | Top Issue |
|---|---|---|---|---|---|
| /explore-the-collection/ | 263 | 79 | 0% | 12.5× | High JS Bloat |
| /whats-on/ | 80 | 75 | 0% | 17.5× | High JS Bloat |
| /people/ | 61 | 62 | 0% | 26.2× | High JS Bloat |
| /news/ | 40 | 65 | 0% | 20.0× | High JS Bloat |
| /professional-guidance-and-services/ | 32 | 76 | 0% | 11.9× | High JS Bloat |
| /blogs/ | 20 | 83 | 0% | 12.8× | High JS Bloat |
| /annual-report-and-accounts-2024-25/ | 1 | 90 | 0% | 6.8× | High JS Bloat |
| /blog/ | 1 | 72 | 0% | 24.7× | High JS Bloat |
| /cookies/ | 1 | 77 | 0% | 7.7× | High JS Bloat |
| /contact/ | 1 | 72 | 0% | 19.2× | High JS Bloat |
Scores update automatically each month. Create a free account for on-demand re-crawls (3/month free).
🔌 API Access
Pull this data programmatically. All sub-page metrics are available via our public API.
curl https://seodiff.io/api/v1/deep10/domain/nationalarchives.gov.ukGet your free API key — 100 requests/month included.
🔗 Similar infrastructure Sites
Domains with a similar tech stack, industry, and AI readiness profile to nationalarchives.gov.uk. Compare side-by-side.
| Domain | ACRI | AI Score | Tech Stack | Token Bloat | Schema | |
|---|---|---|---|---|---|---|
| nationalarchives.gov.uk (this site) | 52 | 69 | Custom / Proprietary | 5.0× | 1 | — |
| heathrowtravelcare.co.uk | 77 | 86 | Custom / Proprietary | 3.6× | 1 | Compare → |
| webike.my | 77 | 86 | Custom / Proprietary | 4.6× | 2 | Compare → |
| humidorshop.hu | 77 | 84 | Custom / Proprietary | 5.6× | 2 | Compare → |
| cs-online.su | 77 | 85 | Custom / Proprietary | 3.4× | 2 | Compare → |
| simferopol.in | 77 | 84 | Custom / Proprietary | 5.0× | 3 | Compare → |
📊 Semantic Share of Voice
How often would an AI cite nationalarchives.gov.uk when users ask about topics in this domain's niche? We run entity queries through our 188k-page search index and measure citation probability.
Analyzing citation landscape…
Bait & Switch Delta
A 15 PAGESCompares your homepage rendering quality with inner pages. A high drift score means AI crawlers see a polished homepage but degraded inner content — the "bait & switch" that erodes trust.
Worst Inner Pages
E-E-A-T Trust Signals
C 40/100Trust indicators extracted from surface pages. These signals help AI systems verify your site's Experience, Expertise, Authoritativeness, and Trustworthiness.
Citation Profile
19 DOMAINSOutbound citation patterns across surface-crawled pages. Sites that cite diverse, authoritative sources signal higher E-E-A-T to AI systems.
AI trust scores for the domains nationalarchives.gov.uk links to. Citing high-trust sources lifts your own credibility signal.
Remediation Patches
COPY-PASTEAuto-generated code fixes tailored to nationalarchives.gov.uk. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Organization",
"name": "Gov",
"url": "https://nationalarchives.gov.uk",
"logo": "https://nationalarchives.gov.uk/static/assets/images/favicon.ico",
"sameAs": []
}
</script>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "WebSite",
"name": "Gov",
"url": "https://nationalarchives.gov.uk",
"potentialAction": {
"@type": "SearchAction",
"target": "https://nationalarchives.gov.uk/search?q={search_term_string}",
"query-input": "required name=search_term_string"
}
}
</script>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "What is Gov?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Add your answer here — describe what Gov does in 1-2 sentences."
}
},
{
"@type": "Question",
"name": "How does Gov work?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Explain the key features and how users interact with Gov."
}
}
]
}
</script>
Projected Impact
ROI EST.If you apply the patches above, here's the estimated improvement for nationalarchives.gov.uk:
*Estimates based on SEODiff's scoring model. Actual results depend on implementation quality.
📋 Data Export
Download scores and metadata for audits, client reports, or CI/CD pipelines. Exports contain computed metrics only (no copyrighted content).
All data is generated automatically and updated with each crawl. JSON exports contain scores and metadata only (no copyrighted content).
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