You might think you made your site accessible...

NVDA:
https://www.nvaccess.org/download/

JAWS:
https://www.freedomscientific.com/Pro...

WCAG 2.1 Guidelines
https://www.w3.org/TR/WCAG21/

Deque University
https://dequeuniversity.com/

Axe extension:
https://chrome.google.com/webstore/detail/axe/lhdoppojpmngadmnindnejefpokejbdd