Bluesky Character Limit: How Many Characters Per Post?

How Bluesky's limit compares to other platforms

Bluesky's 300-character limit sits in the middle of the major text platforms — more generous than X's standard limit, tighter than LinkedIn's. Most Bluesky posts cross-post cleanly to platforms with similar limits, and require thread splitting on platforms with shorter ones.

What happens when you go over 300 characters

Bluesky supports native threading. If your post exceeds 300 characters, you can split it across multiple posts in a thread — and tools like Ferryman do this automatically when cross-posting from a platform with a more generous limit (like LinkedIn's 3,000 characters). The reading experience stays clean: each post is a separate item in the feed, but they're chained together as a single thread.

Other Bluesky post limits

• Images per post: 4 (up to 1 MB each)
• Alt text on images: Supported
• Video: Supported, up to 180 seconds and 50 MB
• Native threading: Yes — posts can be chained into a native thread

Cross-posting and the Bluesky character limit

When cross-posting from Bluesky (300 chars) to platforms with tighter limits (X at 280), long posts need to be split into threads on the target platform. Cross-posting from Bluesky to platforms with more generous limits (Threads at 500, Mastodon at 500, LinkedIn at 3,000) is straightforward — your posts always fit. Ferryman handles all of this automatically: it watches your origin platform for new posts and replicates them to each target with the right behavior (native threading where supported, single-post fit where character limits allow).

• X → BlueskyCross-post from X to Bluesky
• Threads → BlueskyCross-post from Threads to Bluesky
• Mastodon → BlueskyCross-post from Mastodon to Bluesky
• LinkedIn → BlueskyCross-post from LinkedIn to Bluesky

Frequently asked questions