Use the Post Title as Alt Text for Featured Images Without One
When a featured image has no alternative text, outputs the post title as its alt attribute in themes and blocks, instead of leaving it empty.
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.
WP-CLI Command to Scan Content for Accessibility Problems
Adds a "wp a11y-scan" command that checks published posts and pages for images without alt text, empty links, iframes without titles, positive tabindex and skipped heading levels, and prints a table you can export.