Original URL: The publisher's document written in the AMP format. http://www.example.com/amp/doc.html

AMP Cache URL: The document served through an AMP Cache (e.g., all AMPs served by Google are served through the Google AMP Cache). Most users will never see this URL. https://www-example-com.cdn.ampproject.org/c/www.example.com/amp/doc.html

Google AMP Viewer URL: The document displayed in an AMP viewer (e.g., when rendered on the search result page). https://www.google.com/amp/www.example.com/amp.doc.html

AMP Cache URLs

AMP Viewer URLs

www.google.com/amp

How does pre-rendering work?

The AMP Viewer pre-renders an AMP document in a hidden iFrame.









Where do google.com/amp URLs come from?

www.example.com/amp/doc.html

www-example-com.cdn.ampproject.org/www.example.com/amp/doc.html

www.google.com

Why do we show a header bar?

www.google.com

What's next?