Key takeaways
- No hashtag count on Bluesky; tags share the 300-character post.
- One hashtag can be up to 64 characters.
- A post can also carry up to 8 extra tags outside the text, through apps that support them.
- One to three short, specific tags leave room for the message.
On this page
Is there a hashtag limit on Bluesky?
No count limit. A hashtag is ordinary text inside the post, so the post length is the only ceiling. The AT Protocol, which defines every Bluesky post, sets these rules:
| Rule | Limit |
|---|---|
| How many in the text | No count; the whole post holds 300 characters |
| Length of one hashtag | Up to 64 characters |
| Extra tags outside the text | Up to 8, through apps that support them |
| Format | A # followed by the word, with no spaces |
| What a tap shows | Posts that use the same hashtag |
How many hashtags should you use on Bluesky?
One to three. Each tag spends characters from the 300, so a short set keeps room for what you want to say: one for the topic, and one for a community or event you are joining. Many Bluesky custom feeds collect posts by hashtag, so the tag a feed in your niche follows is worth more than a generic one. Check the length with the Bluesky character counter, and find candidates with the hashtag generator.
Why is a Bluesky hashtag not a link?
Usually a space or punctuation inside it, which ends the tag early, or a tag over 64 characters. Write it as one word after the #. Compare every network’s rules in the hashtag limits by platform.
How do you schedule Bluesky posts with hashtags?
With SkedCast: write the post with its hashtags, and the composer counts the 300 characters the way Bluesky does, then pick the time. Saved hashtag groups keep your regular sets one click away, and the same post can go to other networks with their own tags. See how to schedule Bluesky posts and the Bluesky scheduler.
Sources
FAQ
- How many hashtags can I use on Bluesky?
- Any number; Bluesky sets no count. They share the post’s 300 characters, so one to three is practical.
- How long can a Bluesky hashtag be?
- Up to 64 characters for a single hashtag.
- Do hashtags count toward the Bluesky character limit?
- Yes. A hashtag in the text is part of the post and counts toward its 300 characters.
- Do hashtags work on Bluesky?
- Yes. A hashtag becomes a link to posts using it, and many custom feeds collect posts by hashtag.
- Can I mute a hashtag on Bluesky?
- Yes. Add it to your muted words and tags in Bluesky’s moderation settings, and posts with it are hidden for you.