AMP pages must follow strict rules to ensure fast, mobile-friendly performance.
If your page is missing critical elements like <html amp> or the
amp-boilerplate, it may break or won’t be recognized as valid AMP.
This tool checks basic signals. For a deeper official validation, use the AMP validator or browser dev tools with the official AMP extension.
A valid AMP page can enjoy features like higher placement in mobile carousels (depending on region), faster load times, and a better mobile experience.