Google Sites requirements

See System requirements and browsers.

1. All of the Drive and docs hosts and ports.
2. The following additional hosts using HTTPS (port 443):
   • sites.google.com
   • www.google-analytics.com

Note: Embedded websites will not render unless the embedded URLs are added to the lists of hosts using HTTPS.

Sites, and the content you embed in sites, doesn’t count toward your Drive storage quota.

Images and other content added to a site are stored within that site (they're not added to Drive or any other Google product).

Deleting a Site file also deletes the content within a site. Separate copies stored in Drive aren’t affected.