Best Website Accessibility Testing Tools 2026
Automated accessibility testing tools help websites achieve WCAG 2.1 AA compliance. This comparison reviews the top tools available in 2026, including features, pricing, and WCAG coverage. ComplyKeep, WAVE, axe DevTools, Google Lighthouse, and Pa11y are compared below.
Quick Comparison Table
| Tool | Free Plan | Multi-Page Scan | Fix Instructions | PDF Report | Automated Rescans | Price |
|---|---|---|---|---|---|---|
| ComplyKeep RECOMMENDED | Yes (20 pages) | Yes | Yes | Yes | Yes (Pro) | Free — €79/mo |
| WAVE | Yes (1 page) | No | Basic | No | No | Free / $39/mo |
| axe DevTools | Limited | Yes | Yes | Limited | No | $432/yr |
| Google Lighthouse | Yes | No (1 page) | Basic | No | No | Free |
| Pa11y | Yes | Yes | No | No | No | Free (open source) |
| SortSite | No | Yes | Yes | Yes | No | $599/yr |
Detailed Tool Reviews
ComplyKeep is an automated web accessibility scanner that tests websites against WCAG 2.1 AA criteria. It crawls your site, identifies violations, and generates detailed reports with code-level fix instructions. Best for businesses that need affordable, comprehensive accessibility scanning with actionable reports.
- Scans up to 20 pages free, 100 pages on paid plans
- Detailed fix instructions for every violation
- Severity classification: critical, serious, moderate, minor
- PDF report export for sharing with development teams
- Weekly automated rescans on Monitor Pro plan
- Tests all WCAG 2.1 AA criteria including contrast, alt text, headings, forms, ARIA
- Email notifications when scans complete
- 30-day money-back guarantee
- Newer tool with smaller community than established competitors
- Cannot scan password-protected pages (yet)
WAVE is a free browser extension and web-based tool by WebAIM that evaluates single pages for accessibility issues. Good for quick checks but limited for comprehensive scanning.
- Free browser extension for quick single-page checks
- Visual overlay showing issues on the page
- Well-established tool from WebAIM (trusted in accessibility community)
- Only scans one page at a time
- No multi-page crawling capability
- No downloadable reports or PDF export
- No automated rescans or monitoring
- Limited fix guidance — identifies issues but doesn't explain how to fix them
axe DevTools by Deque Systems is a developer-focused accessibility testing tool that integrates with CI/CD pipelines. Strong for development teams but expensive for non-technical users.
- Integrates with CI/CD pipelines for automated testing
- Browser extension for development testing
- Detailed violation documentation
- Strong developer community and documentation
- Expensive at $432/year for the full version
- Geared toward developers, not non-technical users
- No PDF report generation for stakeholders
- Requires technical knowledge to interpret results
Google Lighthouse is a free tool built into Chrome DevTools that audits performance, accessibility, SEO, and best practices. Good for quick checks but limited accessibility depth.
- Free and built into Chrome browser
- Quick audit of any single page
- Also checks performance and SEO alongside accessibility
- Only scans one page at a time
- Limited WCAG 2.1 AA criteria coverage
- No fix instructions for identified issues
- No reports, monitoring, or history
- Accessibility is only one part of the audit, not the focus
Pa11y is a free, open-source accessibility testing tool that runs from the command line. Good for developers who want automated testing but requires technical setup.
- Free and open source
- Command-line tool for automated testing
- Can scan multiple pages
- Integrates with CI/CD pipelines
- Requires command-line knowledge to use
- No user interface for non-technical users
- No fix instructions or guidance
- No reports or PDF export
- Community-maintained, limited support
How to Choose an Accessibility Testing Tool
For Small Businesses
Small businesses need affordable, easy-to-use tools that don't require technical knowledge. ComplyKeep's free plan scans 20 pages with no signup, and the Full Report at €29 provides complete fix instructions that can be shared with a web developer. WAVE's free extension is also useful for quick single-page checks.
For Developers
Developers benefit from tools that integrate with their workflow. axe DevTools integrates with CI/CD pipelines and provides detailed violation documentation. Pa11y is a good free command-line alternative. ComplyKeep complements these by providing stakeholder-friendly PDF reports and multi-page scanning without setup.
For Enterprises
Enterprises need continuous monitoring, detailed reporting, and compliance documentation. ComplyKeep's Monitor Pro at €79/month provides weekly automated rescans and real-time alerts. SortSite at $599/year offers comprehensive crawling. For full compliance, combine automated scanning with manual audits by accessibility consultants.
FAQ
What is the best free accessibility testing tool?
The best free accessibility testing tools are ComplyKeep (scans up to 20 pages with summary report), WAVE (free browser extension for single pages), and Google Lighthouse (built into Chrome). ComplyKeep offers the most comprehensive free tier with multi-page scanning and no installation required.
Can automated tools detect all accessibility issues?
No, automated tools detect approximately 30-40% of WCAG 2.1 AA issues. ComplyKeep, axe DevTools, and WAVE all catch automated-detectable issues like color contrast, missing alt text, and heading order. Manual testing is needed for criteria like content readability, meaningful sequence, and keyboard navigation quality. Combine automated scanning with manual review for full compliance.
How often should I test my website for accessibility?
Websites should be tested at least quarterly and after any significant content or design change. ComplyKeep's Monitor Pro plan provides weekly automated rescans to catch new issues as content changes. This is especially important for sites that publish new content regularly.
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