Accessibility Tools for Developers

Join us in making the technology of the world accessible to people of all abilities

A team is working together to make a website and its elements accessible

Why Accessibility?

One in five people has a disability that affects their daily life. Having equal access to technology has a profound, enabling effect for people with disabilities.


Developer tools for newbies and experts alike


  • Check Accessibility
  • View Results
  • Remediate Issues


Browse our collection of articles from #a11y experts


  • JavaScript
  • Forms
  • Color and Contrast


Check out virtual and IRL events across the globe


  • Inclusive design
  • Fixing Accessibility Issues
  • Understanding Web Accessibility (A11y)

Start with our free tools

Explore our free tools to test for some common accessibility issues.

Browser showing search bar and page HTML page structure

Page Tester

Want to know if your website is accessible to persons with disabilities? Use the free community editions of our best tools to start evaluating your system and get early insights.

Accessible Color Picker (New)

The color contrast checker provides a quick and easy method for testing color combinations for validity under leading accessibility standards such as the Web Content Accessibility Guidelines (WCAG) 2.0 requirements.

Desktop monitor show a pass with a smilie face and fail with a not happy face

Color Contrast Checker

The algorithm used in this tool and subsequent results are based on the luminosity algorithm recommended in the WCAG 2.0 guidelines to test for contrast.