Test Your Site
This page provides information about accessibility testing tools that can be helpful in detecting accessibility concerns on websites and web applications. We recommend you test against both Section 508 and WCAG 2.0 to ensure long-term conformance with accessibility guidelines and create the best experience for users of the site or application.
Free Evaluation Checkers
To check the accessibility of sites, explore the free checkers and tools below:
Single page and site evaluation tools.
- WebAIM WAVE Accessibility Tool – an in-browser quick accessibility checker
- WebAIM WAVE Chrome Extension – An installable extension for the Chrome browser that allows for in-page accessibility checking
- HTML Code Sniffer – a quick tool for detecting areas of web code that can be the source of accessibility concerns, top pick for developers
- Deque’s aXe (The Accessibility Engine) – an open source chrome extension and Firefox add-on to test webpages for accessibility issues.
- Web Developer Toolbar – extension or add-on that provides various developer tools to Chrome and Firefox.
For a complete list of Web Evaluation checkers, explore the Web Accessibility Evaluation Tools List provided by W3C’s Web Accessibility initiative.
For information on how to check PDFs and other types of electronic documents, please visit our Creating Accessible Documents page.
Color Contrast Checkers
- WebAIM Color Contrast Checker – an in-browser hexadecimal color checker that quickly shows the contrast ratio of any color combination
- Colour Contrast Analyzer (Win/Mac) – a downloadable tool that allows the user to compare and contrast any color combinations, online or off, no hexadecimal required
The Web accessibility evaluation checkers listed above can perform automated testing of the web pages and provides information about whether the accessibility guidelines are met and reports the issues. Automated testing needs to be combined with manual testing to complete the process for accessibility checking. Screen readers are programs used by people with visual impairments that provide an auditory representation of what is on the screen. Testing with a screen reader can help achieve manual testing.
- JAWS screen reader (free download) – Job Access With Speech (JAWS) is a commonly used robust screen reader for Microsoft’s Windows and has a free demo mode. To perform testing of web pages use Internet Explorer and Firefox. To get started, we recommend WebAIM’s Using JAWS to Evaluate Web Accessibility guide.
- NDVA screen reader (free download) – NonVisual Desktop Access (NVDA) is a free, open source screen reader for Microsoft’s Windows. To get started, we recommend WebAIM’s Using NVDA to Evaluate Web Accessibility guide.
- VoiceOver screen reader – VoiceOver screen reader is built in the MacOS and iOS. Testing should be conducted using Safari. To get started, we recommend WebAIM’s Using VoiceOver to Evaluate Web Accessibility guide.
Our team can provide an accessibility evaluation of MU websites or web applications, and assist with how to create accessible web technologies. To request our services, complete the Web Accessibility Services request form .