Preview and validate
We’re using the power of the AMP Playground to preview our page and ensure it’s valid AMP during our development process. Making your AMP pages valid is a worthy goal, as a valid AMP page means it’s following strict guidelines that ensure Page Experience and make it eligible for caching! Documents served from an AMP Cache are preloaded efficiently and safely, and perform user-beneficial performance optimizations to page content.
Unfortunately, using the AMP Playground to check all your pages wouldn’t be practical for a multi-page site. Find what works for you by reading more about how to automate AMP’s Validation workflow and what to do if you encounter errors.
Written by @crystalonscript