I'm looking for tools to check the accessibility of my website. I have found [https://clearlinks.org/ https://clearlinks.org/], which works well, but I wanted to check if Mozilla has any of its own tools to use to inspect the current state of my website. I was reading this article [https://clearlinks.org/blog/document-accessibility-best-practices Document Accessibility Best Practices] and I am a bit confused about what requirements are for websites vs documents.