Skip to main content


My tiny #ActivityPub server is now a massive... 64KB.

Yup. Kilobytes.

* It can send posts with attached images & alt text.
* Reply to posts with a proper thread.
* Read replies sent to it.
* Follow #Fediverse accounts and see their posts & edits.
* You can follow it.
* Hell, it even does HTTP Message Signature Verification!

All of this in a single PHP file. No database, no Docker, no dependencies, no AI.

You can grab the code at https://gitlab.com/edent/activitypub-single-php-file/

๐Ÿ˜Ž

โ‡ง