Web-based Accessibility Evaluators
These web-based accessibility tools are available in all browsers.
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Wave – Web Accessibility Evaluation Tool
Use to check individual web pages for potential accessibility issues.
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Contrast Checker - WebAIM
Use to check the contrast ratio of two color values.
Desktop Applications
Use desktop applications to find potential accessibility issues or test the experience of using assistive programs.
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The Color Contrast Analyser (CCA) for Windows and Mac
Use to check color contrast ratios and simulate color blindness.
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Accessibility Inspector for Mac
Test how your Mac application represents itself to people using accessibility features.
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ZoomText
Screen magnification software available at cost for Windows. Demo version available.
Browser Extensions
Use browser extensions to help you identify various potential accessibility issues on the webpage you are viewing.
| Browser Extension | Chrome | Edge | Firefox | Safari |
|---|---|---|---|---|
| Accessibility Insights | Yes | Yes | No | No |
| AI Inspector | No | No | Yes | No |
| ARC Toolkit | Yes | No | No | No |
| aXe: the Accessibility Engine | Yes | Yes | Yes | No |
| Inclusive lens | Yes | No | No | No |
| Colorzilla | Yes | No | Yes | No |
| HeadingsMap | No | No | Yes | No |
| High Contrast | Yes | No | No | No |
| HTML_CodeSniffer | Yes | Yes | Yes | Yes |
| Pauljadam Bookmarklets | Yes | Yes | Yes | Yes |
| SiteImprove Accessibility Checker | Yes | Yes | Yes | No |
| Web Developer Toolbar | Yes | No | Yes | No |
| WebAIM's WAVE Toolbar | Yes | Yes | Yes | No |
| Accessibility Checker by WebYes | Yes | No | No | No |
Screen Readers
Test how your website, application or digital document are interacted with by screen readers.
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NonVisual Desktop Access (NVDA)
Free and open source; Windows only.
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JAWS
Available at cost, with a free demo version available; Windows only.
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VoiceOver
Built into Mac OS X, iOS, and iPod operating systems.
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Narrator
Built into Windows operating system.
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Talkback
Built into Android operating system.