The main page, if you want to get a HTML page mobile ready for Googles AMP project. You type in your URL and Google valides the syntax and gives you examples what to change. Useful!
You can see the result "PASS" when you use this very page here with its AMP version (added a ?v=/amp/) to any landing page we create automatically with SMYLN.
AMP HTML Project Web Validator and example.
Tests Accelerated Mobile Pages for valid markup.