About MagentaA11y

MagentaA11y is a tool built to simplify the process of accessibility testing.

We wanted to build an intuitive way for product teams to define “done” in a way that ensures accessible experiences work for everyone.

It uses Jekyll with a custom theme as a CMS and relies on markdown for entry creation.


  • This is not a comprehensive list of all of the WCAG success criteria or techniques required to become WCAG compliant and should not be used as such.
  • Adherence to this list also does not guarantee that a digital asset will be free from accessibility issues or complaints.

Using MagentaA11y

Product owners, designers, developers or testers can use the checklist builder to collect testing instructions for web or native app components.

These testing criteria are displayed in markdown format for easy copying/pasting into project management tools like Jira.

Testing instructions includes:

  • How to test with keyboard
  • How to test with screeen reader
  • How to test with a screen reader on a mobile device
  • Link to the full entry

Each entry contains:

  • Video demos with recommended screen reader browser pairings
  • Code examples
  • Developer notes
  • Links to official WCAG and WAI-ARIA documentation


MagentaA11y is built and maintained by the T-Mobile Accessibility Resource Center

Here are some ways to contribute:

  • Add a concise demo video using a screen reader that’s not yet covered.
  • Add an entry for a component that is not included.
  • Fix a typo or edit for consistent language.

Local installation instructions

A11yEngineer is just Github Pages site running Jekyll. Follow Github’s instructions for installing locally.


MagentaA11y is open sourced by T-Mobile and released under the Apache 2.0 License.