Validators and Accessibility Testing Tools

Validators and accessibility testing tools help to ensure that code complies with W3C standards and that your website is accessible to the latest guidelines so that as many people as possible can use your website.

Back to Testing Tools main page

UITest.com

A series of tools to check the accessibility of your web site, validation of your code plus many other tests.

W3C Markup Validation

Provided by W3C, validates your HTML and XHTML against several different doctypes includes HTML 4.01 Strict and HTML 4.01 Transitional.

Worldspace FireEyes

A nextgen web accessibility tool that ensures both static and dynamic content within a web portfolio are compliant with standards such as Section 508, WCAG 1.0, and WCAG 2.0.

FireEyes is fully JavaScript aware and handles event-based page content.

W3C CSS Validation

Provided by W3C, validates the CSS (level 2.1) used on your web site.

Wave

A free web accessibility tool that can either check a web site address, a file uploaded to Wave or some HTML code.

Nibbler

Nibbler is a free web-based testing tool that takes a web address, tried to find up to 5 pages from that web site, and tests them for a range of criteria.

Once the test has completed after a couple of minutes you get a free report scoring the the website out of 10 for various tests with more detail on results within the report.

This tool is useful for pointing out problem areas that then require further investigation such as whether your code validates or whether the website has Google Analytics installed on all 5 pages.

Siteray

Conduct tests to improve your website's SEO, accessibility, design, spelling and more.

Web Accessibility Toolbar

The Web Accessibility Toolbar has been developed to aid manual examination of web pages for a variety of aspects of accessibility.

Colorblind Filter

Checks how your website is viewed by users with different types of colour blindness.

Truwex Online

Very useful tool that checks your website’s accessibility against Section 508, WCAG 1.0 and WCAG 2.0 standards.

Thunder Screenreader

Free screen reader software supporting blind and visually impaired computer users.

AChecker

Gives you a report checking your site for known problems, likely problems and potential problems. Checks against all the main guidelines and also validates your HTML and CSS.

Lynx Text Browser

Lynx is the text web browser, popular with visually impaired users and also often used to check for usability of websites in older browsers.

MAGic Screen Magnification Software

Magnifies your PC screen by up to 36 times to aid users with low vision. No longer will you struggle with type too small to see and images with indecipherable details.

JAWS for Windows Screen Reading Software

A popular screen reader, developed for computer and web users whose vision loss prevents them from seeing screen content, JAWS reads aloud what's on the PC screen.

W3Clove

Site-wide markup validation.

Validate the HTML markup of your whole website with just one click.

*please note that automated accessibility tools should be used in conjunction with real accessibility testing. They can give you a good idea of some accessibility problems with your web site but, used on their own, may mean that you miss some important issues.

More Testing Tools: