Tools and testing COLLECTION

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Tools and testing COLLECTION collection
Last reviewed
13 August 2026

Find tools to help you identify accessibility barriers and test your products and services.

Testing tools are only part of accessibility testing

Automated and manual tools can help you identify potential barriers, but they cannot identify every issue. Where possible, test your service with the people who use it to understand the barriers they may experience.

Start with these tools

These tools are a good starting point for identifying common accessibility barriers. You can use them without specialist accessibility knowledge.

  • ARC Toolkit - code-level accessibility testing based on WCAG
  • axe DevTools - automated accessibility testing for common WCAG issues
  • Accessibility Insights - automated and guided manual checks to help identify accessibility issues
  • WAVE Evaluation - visual accessibility evaluation that helps identify issues in page content and layout.

Other tools and checks

Use these tools to investigate specific accessibility barriers and carry out manual checks. Some require you to review or test your content yourself.

  • blur - simulate blurred vision to check whether content remains visible
  • contrast checker - check if text and other visual information has sufficient colour contrast
  • headingsMap - check the structure and hierarchy of headings
  • lists - check the structure and accessibility of lists.
  • resize text - check whether content remains usable when text is resized
  • target size - check whether interactive elements are large enough to use.
  • text spacing check how content works when text spacing is increased.

Specialist testing

Some accessibility testing requires specialist knowledge or assistive technology. These tests can help you understand how your content works for people who use assistive technology.

  • screen readers - use screen readers such as NVDA, JAWS or VoiceOver (Apple's built-in screen reader for macOS and iOS) to understand how people who rely on them navigate your content.

Understand test results

Accessibility testing tools cannot identify every accessibility barrier. They can also produce false positives or give false assurance, so you need to validate test results and carry out manual checks.

False positives and false assurance

Learn how to validate test results and identify accessibility barriers that automated tools may miss.