What works on Workers, and what does not yet

Pages, posts, comments, search, feeds, the REST API, the block editor and logins all work. The 30 most-installed plugins load and work at page level.

• Media uploads go to S3-compatible storage (R2, S3, OSS…), since a Worker has no lasting disk.
• Email through PHP mail() is not available; mail plugins that use an HTTP API are the way.
• Plugins and themes are installed on the source site and deployed again, not from this admin.