https://accessknight.com
1 page892 elements33 rules
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Paste Your URL
Point AccessKnight at any public page. No credentials, no scripts, no install — we scan the same content any visitor would see.
Readable by your users — and the AI that now reads for them.
AccessKnight is a website scanner that audits any page for both WCAG 2.1 accessibility and AI readability, then hands you one report — and the shared fixes that satisfy screen readers and the AI engines (ChatGPT, Perplexity, Google AI) that now read and cite the web.
On accessible sites, AI agents finish 78% of tasks — when accessibility breaks, that drops to 42%. (UC Berkeley × Michigan, CHI 2026)
33 WCAG checks + 13 AI-readability checks · no signup, no credit card
✓ Free — no credit card✓ WCAG + AI readability✓ One scan, two scores
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Scanning
Three steps to readable.
72
▲ +14 since last scan
WCAG 1.1.1Missing alt
WCAG 1.4.3Contrast 3.1:1
WCAG 2.4.4Link text not descriptive
WCAG 2.4.6Heading skipped
02
Review Your Scored Report
Get both 0–100 scores — WCAG accessibility and AI readability — with severity breakdowns across nine categories: images, headings, forms, ARIA, contrast, tables, nav, documents, and media.
Checkout.tsxFIX · WCAG 1.1.1
41 <button onClick={pay}>
42 - <img src="/lock.svg"/>
42 + <img src="/lock.svg" alt="Secure"/>
43 Pay $49
44 </button>03
Follow the Guided Fix
Each failing rule shows the exact HTML element and a copy-paste fix. Apply it, rescan to verify, move on. No WCAG specialist required.
Audit, fix, and monitor.
33 WCAG 2.1 Checks
Nine categories covered in one scan: images, headings, forms, ARIA, color contrast, tables, navigation, documents, and media.
AI crawler access
OAI-SearchBot✓ allowed
ChatGPT-User✓ allowed
PerplexityBot✓ allowed
Claude✓ allowed
Googlebot✓ allowed
Extractability22 / 30
AI & Agent Readability
Beyond WCAG: AI-crawler access (can ChatGPT, Perplexity & Claude reach you?), content extractability, and structured data — scored alongside accessibility on every plan, free included.
ReactVueSvelteHTML
<button aria-label="Close dialog">
<Icon name="x"/>
</button>Copy-Paste Fix Suggestions
Every issue surfaces the exact failing HTML element plus a concrete, actionable fix — no specification-reading required.
Critical
3
Serious
7
Moderate
12
Minor
4
0–100 Score & Severity
A granular, data-driven score with severity breakdowns that let you prioritize the fixes with the greatest user impact.
feat/checkout-v2✓ a11y: 94/100
fix/nav-labels⚠ 2 issues
feat/pricing✓ a11y: 98/100
Continuous Monitoring
Daily or weekly auto-scans catch regressions from new deployments. Email alerts fire the moment either score — accessibility or AI readability — drops.
PDF
accessibility-report.pdf
2.4 MB · 38 pages
JSON
scan-results.json
CI-ready · axe-compatible
Text, JSON & PDF Exports
Deliverables for clients, evidence for auditors, and CI-ready JSON for your build pipeline — with both scores carried into every file.
What our numbers
actually look like.
0%
of sites fail ADA
and don't know it
0
WCAG rules checked
on every single scan
0+
ADA lawsuits in 2025
filed against websites
<0s
average scan time
from URL to report
Built on the standard
every accessibility law references.
AccessKnight runs 33 automated checks against WCAG 2.1 — the technical baseline that ADA, Section 508, EN 301 549, the EAA, and most other accessibility regulations point to. A scan gives you the WCAG evidence those frameworks ask for.
AccessKnight is an audit tool, not a legal opinion. It surfaces WCAG issues and fix guidance — consult counsel for framework-specific conformance sign-off.
ADA Title III
US Dept. of Justice
Courts apply WCAG as the de-facto standard for ADA website accessibility.
Section 508
US Federal
Federal procurement aligns with WCAG 2.0 AA via the 508 Refresh.
EN 301 549
European Norm
Harmonized EU accessibility standard — built on WCAG 2.1 AA.
EAA 2025
European Accessibility Act
Digital products sold in the EU must meet WCAG-based requirements.
AODA
Ontario, Canada
Ontario organizations (50+ employees) must conform to WCAG 2.0 AA.
UK Equality Act
United Kingdom
WCAG is the practical benchmark regulators and courts use for "reasonable adjustments."
Done for you
Or have it fixed for you.
AccessKnight is the scanner behind Horizontal Impact's accessibility audits. The audit runs the same checks across a representative set of your pages, separates the recurring template issues from one-off content fixes, and produces an effort estimate you can budget against — or the remediation work itself.
Automated testing catches roughly a third of accessibility barriers. The report says which findings are automated and what still needs a person.
Public entities: the Department of Justice's ADA Title II rule requires state and local government websites to meet WCAG 2.1 Level AA — by April 24, 2026 for entities serving 50,000 or more people, and April 26, 2027 for those serving fewer, and all special district governments.
Accessibility audits at Horizontal Impact (opens in a new tab) →FAQ
Questions, answered.
What is AI readability?
AI readability is how easily AI engines like ChatGPT, Perplexity, and Google AI can crawl, read, and cite your page. AccessKnight scores it across AI crawler access, semantic structure, and how extractable your content is.
Do the accessibility and AI fixes really overlap?
Yes. Semantic HTML, heading order, accessible names, server-rendered content, and structured data improve both scores at once. AccessKnight leads every report with these shared-core fixes — fix once, win twice.
Which AI engines does it check?
AccessKnight checks crawler access for OpenAI's OAI-SearchBot (ChatGPT search), ChatGPT-User, Anthropic's Claude, PerplexityBot, and Googlebot — plus whether your content is structured for citation.
Does this replace my WCAG audit?
No — it includes it. AccessKnight runs a full WCAG 2.1 accessibility scan (33 rules across nine categories) and adds the AI-readability score alongside it, in the same report.
Will adding ARIA improve my scores?
Usually the opposite. Misused ARIA increases errors for both screen readers and AI. AccessKnight rewards native HTML elements first and recommends ARIA only where native elements genuinely fall short.
Is AI readability included on the free plan?
Yes. The scanner on this page gives you an AI-readability score with no signup at all, and a free account adds all 13 checks with their fixes — AI-crawler access (can OAI-SearchBot, PerplexityBot and Claude reach the page?) plus the shared-core structure AI engines rely on. The AI checks need a live URL, robots.txt and sitemap, so they can't run on pasted HTML.
Is AccessKnight a free accessibility checker?
Yes — and a free AI-readability checker. Scan any URL on this page with no signup and no credit card for all 33 WCAG checks plus 13 AI-readability checks, with your scores and copy-paste fixes. A free account adds five saved scans a month with every finding from both halves. If you'd rather not work through a report yourself, we run full-site audits and the remediation as a service.
What's the difference between ADA and WCAG?
The ADA is the US civil-rights law that requires accessible websites; WCAG is the technical standard that defines what accessibility means in practice. Courts and regulators treat WCAG 2.1 Level AA as the benchmark for ADA compliance, so an AccessKnight WCAG scan gives you the evidence the law points to.
How do I fix a missing alt attribute?
Add an alt attribute that describes what each meaningful image shows (for a chart, something like alt set to 'Q4 revenue by region'), and give purely decorative images an empty alt so screen readers skip them. AccessKnight flags every image missing alt text and shows the exact element plus a ready-to-paste fix.
From the blog
Know the landscape.
Plain-English guides to ADA law, WCAG, and the fixes that actually move your score — written for the people who have to ship them.
Guide12 min read
ADA vs. WCAG: What Every Business Owner Actually Needs to Know in 2026
ADA and WCAG get tossed around interchangeably — but they're not the same thing. Here's the plain-English breakdown of what each one is, how they work together, and what your business needs to do.
Guide8 min read
WCAG 2.1 Checklist: 33 Rules Every Website Must Pass
A complete checklist of 33 automated WCAG 2.1 accessibility rules organized by category. Check your site against every rule.
Guide5 min read
Why 96% of Websites Fail ADA Accessibility Standards
Most websites have critical accessibility barriers. Learn what WCAG compliance means, why it matters legally, and how to audit your site for free.
Ready to be read —
by everyone?
Scan any URL above with no signup — 33 WCAG checks and 13 AI-readability checks, both scored. A free account adds five saved scans a month with every issue and its fix. No credit card required.
✓ No credit card✓ Cancel anytime✓ WCAG + AI readability