Signal
Bluesky

Publish to Bluesky

How Bluesky posts and threads go out, and how Signal prepares media into a provider-safe form before publishing.

Last updated June 14, 2026

Once Bluesky is connected, scheduled Bluesky items publish like any other: the scheduler claims, posts, and records the result. Bluesky supports single posts and threads.

If a post includes an image, Signal prepares it into a provider-safe derivative before publishing (see Media derivatives) so it meets Bluesky's constraints. Required alt text is validated before the post is allowed out.

Good to know

  • ·Threads publish as a connected sequence of posts.
  • ·Images are transcoded to a provider-safe derivative automatically.
  • ·Missing required alt text blocks the post rather than publishing inaccessible media.