Tools for developing and testing accessibility
This CSS file intends to warn developers about possible risks and mistakes that exist in HTML code. It can also be used to roughly evaluate a site's quality by simply including it as an external stylesheet.
CSS Accessibility Validator for your HTML
This is a library of accessibility-related testing and utility code.
Copyright 2013 Google Inc. All Rights Reserved.
Calculate the WCAG contrast ratio between 2 colors.
Diagnostic.css is a stylesheet which allows the user to test for common errors in a page's markup
flagging accessibility concerns
Pa11y is your automated accessibility testing pal
A tool to calculate the contrast ratio between any two valid CSS colors.
Accessibility testing in the browser and on the server.
If you see an error or omission or if you have any other comments, please let us know