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Connect Mastodon

  1. Open Connections → New Connection → Mastodon.

  2. Enter the instance where your account is hosted, such as mastodon.social.

  3. Continue to the instance’s sign-in screen.

  4. Authorize dopost.

  5. Return to dopost to complete the connection.

Use your account’s actual instance, not a different Mastodon server.

Publish posts and threads

Select the account in Create Post, write the opening post and add supported media.

Use the thread section to add follow-up posts when needed.

Limits and publishing behavior can vary by instance. Review dopost’s validation and any error returned by your server.

Platform Limits

Feature

Post

Caption

Max 500 characters (default, varies by instance)

Images

✅ (up to 4 images)

Image size

40MB max (default)

Videos

✅ (1 video)

Video length

Up to 40 minutes

Video size

40MB max (default)

Video formats

MP4, WEBM (H.264 codec, AAC audio)

Image formats

JPG, PNG, GIF, WEBP

Image resolution

Min 320x240, Max 1920x1920

Video resolution

Min 320x240, Recommended 1280x720

Frame rate

24-60 fps

Aspect ratio

Flexible

Mixed media

❌ (images or video, not both)

Note: Limits may vary depending on the Mastodon instance.