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Bluesky character counter

Bluesky posts stop at 300 characters. This counter counts them the same way Bluesky does, so an emoji is one character.

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Check your Bluesky text

Type or paste your text to see how it fits the 300-character post limit and the other Bluesky fields below. Characters are counted the way people see them, so an emoji with a skin tone is one.

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    What counts toward the Bluesky limit

    Bluesky counts graphemes: characters as people see them. A letter, a space, an emoji or a flag each count as one, which is exactly how this counter works. Behind the scenes a post must also stay under 3,000 bytes, a cap you’ll only meet with very emoji-heavy text.

    Replies are posts too, with the same 300-character limit. Hashtags you type count toward the 300 and can be up to 64 characters each. A post can also carry up to eight extra tags that don’t appear in the text.

    The bio has 256 characters and the display name 64, and the official app gives you up to 2,000 characters of alt text per image.

    Bluesky character limits

    FieldLimit (characters)Notes
    Post300300 graphemes and at most 3,000 bytes. Replies use the same limit.
    Bio256
    Display name64
    Hashtag64Per tag.
    Image alt text2,000Limit in the official app.
    Username on bsky.social18The part before .bsky.social.

    Hashtags on Bluesky

    Hashtags in text become tag facets of up to 64 graphemes each. A post can also carry up to 8 extra tags that don't appear in the text.

    Tips for Bluesky posts

    • Keep each post under 300 characters and split longer ideas into a thread.
    • Write alt text for every image, since the app gives you plenty of room.
    • Use a few clear hashtags. Tags are clickable and searchable.
    • Use a custom domain as your handle so people can see the brand owns the account.
    • Add caption files to videos so they work with the sound off.

    Publish Bluesky posts that fit, on schedule

    Postocial publishes to Bluesky from the same calendar as your other networks. Write a 300-character Bluesky version next to the longer versions for LinkedIn or Facebook, schedule it and, on Premium and higher plans, answer replies in the unified inbox.

    See how Postocial works with Bluesky.

    Sources

    The Bluesky limits on this page come from these pages. Researched on . Networks change their limits without notice, so check the official pages before a big launch.

    FAQ

    Bluesky character limit questions

    What is the character limit on Bluesky?

    300 characters per post, counted as graphemes, with a technical cap of 3,000 bytes. Replies have the same limit.

    Do emoji count as one character on Bluesky?

    Yes, almost always. Bluesky counts graphemes, so an emoji, even one with a skin tone, counts as one character, just like in this counter.

    How long can a Bluesky bio be?

    Up to 256 characters. Display names can be up to 64.

    How do hashtags work on Bluesky?

    Hashtags in your text become clickable tags of up to 64 characters each. A post can also carry up to eight extra tags that don’t show in the text.

    Schedule Bluesky posts with a version that fits

    Postocial keeps a separate version of each post for every network, so your Bluesky text can be exactly as long as it needs to be while other channels get their own. Try it free for 7 days.

    Start your free trialPostocial for Bluesky

    A card is required to start the 7-day free trial. When the trial ends, we charge your card for the plan you picked, unless you cancel before.