===Automated testing===
There are a number of free tools you can use to test your system. Here are a few popular browser extensions:
[https://wave.webaim.org/extension/ '''Wave toolbar'''] - Free - annotates possible problems inlineat the page level.
[[File:a11y-wave.png|thumb|none|500px|Screenshot of Wave]]
[https://developers.google.com/web/tools/lighthouse/ '''Google Lighthouse''']- Free - provides an accessibility audit at the page level.
[[File:a11y-lighthouse.jpg|thumb|none|500px|Screenshot of Google audit]]
[https://tenon.io/ '''Tenon'''] - Trial - display code snippets and guidelines.
[[File:a11y-tenon.png|thumb|none|500px|Screenshot of Tenon]]
[https://developers.google.com/web/tools/lighthouse/ '''Google Lighthouse''']- provides an accessibility audit.
[[File:a11y-lighthouse.jpg|thumb|none|500px|Screenshot of Google audit]]
===Other Tools===