

Checker with an open "manual check" request, for an image without alt text.
Editoria11y (“editorial accessibility ally”) is a quality assurance tool built for an author’s workflow:
This plugin is the WordPress adaptation of the open-source Editoria11y library. Tests run in the browser and findings are stored in your own database; nothing is sent to any third party. It is meant to supplement, not replace, testing your code and visual design with developer-focused tools and testing practices.
Check out a demo of the checker itself.
Editoria11y’s WordPress plugin is maintained by Princeton University’s Web Development Services team:
Editoria11y began as a fork of the Toronto Metropolitan University’s Sa11y Accessibility Checker, and our teams regularly pass new code and ideas back and forth.