New: Embed Full Page Applications into Google Sites Pages

Google Sites Feature Update

Use New Google Sites to embed custom code, other websites, other Google Workspace apps in a full page mode instead of just a content block. You can add impressive full page Google Maps and documents. 

Develop custom coded widgets and integrate them into your Google Sites page with this new "full page embed" feature.

How to

In a new Site, navigate to Pages > New page > Full page embed. Name the page and then add a URL, embed code, or embed content from another Google app.