Very useful checklist. I especially liked the point about content being visible to humans but not always readable by AI systems.

I think the same issue also applies to PDFs on WordPress sites. Many businesses keep important information inside brochures, reports, manuals, policies, or guides, but that content often stays outside normal site search and AI discovery.

We’re working on Webequipe PDF Search for WordPress, and this connects strongly with the same idea: make sure important website content is not hidden inside files, images, or technical gaps. AEO is not only about pages anymore — documents also need to be findable.