Version updated for https://github.com/anishathalye/proof-html to version v2.2.3. This action is used across all versions by 3,332 repositories. Go to the GitHub Marketplace to find the latest changes. Action Summary The proof-html GitHub Action automates the validation of HTML and CSS using the Nu HTML Validator and verifies links, images, and metadata utilizing HTMLProofer. It helps ensure the quality and correctness of web content by detecting issues such as invalid markup, broken links, missing alt attributes, and non-secure URLs.