High-Contrast Mode for wp-admin
Adds a "High contrast" checkbox to each user's profile that switches the dashboard to dark backgrounds, white text, yellow links and strong borders for that user only.
Snippet Library
Accessibility snippets for WordPress
Snippets that make WordPress easier for everyone to use: skip links, focus styles, better link text and fixes for common accessibility issues. For site owners who want a site that works with keyboards and screen readers.
Images Missing Alt Text Dashboard Widget
Adds a dashboard widget showing how many images in the Media Library have no alternative text, with a link to the most recent ones to fix.
Stronger Keyboard Focus Outlines in wp-admin
Makes the keyboard focus indicator in the WordPress dashboard thicker and higher-contrast on links, buttons, menus and form fields, so it is easy to see where you are.