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SPECIFICTION
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WCAG Checker

github.com

Free plan WebWindowsmacOSLinuxSelf-hosted
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Spec score 8.2 #63 of 169 in Accessibility Testing Software

Spec sheet

Purpose
WCAG Checker is a local web app for auditing web pages, HTML snippets, and PDFs against WCAG 2.2 Level AA.Read 11 Oct 2026 · github.com
Platforms
The README lists Windows, macOS, and Linux as supported operating systems.Read 11 Oct 2026 · github.com
Free plan
YesRead 25 Sep 2026 · github.com
License
The project is MIT-licensed.Read 11 Oct 2026 · github.com
Audit limitation
The README says automated tools catch roughly 30–50% of accessibility issues and describes this tool as a first pass rather than a replacement for a full audit.Read 11 Oct 2026 · github.com
Automated scans
YesRead 25 Sep 2026 · github.com
Browser extension
NoRead 25 Sep 2026 · github.com
CI/CD integration
NoRead 25 Sep 2026 · github.com
Default network exposure
The server binds to 127.0.0.1 by default, with an option to bind to another interface using HOST=0.0.0.0.Read 11 Oct 2026 · github.com
Local processing
The project says URLs, HTML, and documents never leave the user's machine.Read 11 Oct 2026 · github.com
Manual review tools
NoRead 25 Sep 2026 · github.com
PDF availability
Without Java, web and HTML scans still work, but PDF scans fail until Java is available.Read 11 Oct 2026 · github.com
PDF mapping limitation
The PDF/UA-to-WCAG mapping is described as coarse-grained rather than a rigorous Matterhorn Protocol mapping.Read 11 Oct 2026 · github.com
PDF scans
It uses veraPDF to validate PDFs against PDF/UA-1 and maps failing rules to relevant WCAG 2.2 success criteria.Read 11 Oct 2026 · github.com
Remediation guidance
NoRead 25 Sep 2026 · github.com
Reports
Scans can be exported as a self-contained HTML report or machine-readable JSON.Read 11 Oct 2026 · github.com
Requirements
It requires Node.js 18 or newer; Java 11 or newer is needed for PDF scans.Read 11 Oct 2026 · github.com
URL scan limit
A URL page must return HTTP 200 and load within 45 seconds; pages behind logins or with heavy JavaScript may not finish.Read 11 Oct 2026 · github.com
WCAG coverage
wcag 2.2Read 25 Sep 2026 · github.com
Web scans
It uses axe-core in headless Chromium via Playwright to scan URLs and HTML.Read 11 Oct 2026 · github.com

Plans and prices

WCAG Checker Free Local web app · URL, HTML, and PDF audits · HTML and JSON reports Read 11 Oct 2026 · github.com

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