Bluesky bio checker
See what your Bluesky bio says to someone who just found you in a feed or a starter pack, and get three rewrites under 256 characters, based on what you really post.
What should you put in your Bluesky bio?
Say what you post about, who it is for, and one thing that makes you you. Bluesky gives you 256 characters, more room than X's 160, so you can afford a full sentence and a human detail. Links in the bio are clickable, so add your site or newsletter.
Bluesky has its own habits. People find you through custom feeds and starter packs, then decide from your bio and your last few posts. Many users list pronouns and where else to find them, and a lot of people come from X and keep a bio written for X. This checker reads your bio next to your Bluesky posts and rewrites it for the people who will actually see it.
Bluesky profile limits
| Field | Limit | Tip |
|---|---|---|
| Bio (description) | 256 characters | Room for two sentences and a link. Links are clickable. |
| Display name | 64 characters | Your name, plus a word about what you do if it fits. |
| Handle | Your domain or name.bsky.social | A domain handle you own doubles as verification. |
| Pinned post | One post | Pin an introduction or your best post for new visitors. |
Bluesky bio ideas that work
Formulas with an example for a made-up person. Adapt the structure, not the words.
| Formula | Example | Works for |
|---|---|---|
| What you post + who it's for + where else | Science writer. Plain-English posts on new climate research, mostly for teachers and students. Newsletter link below. | Writers and educators |
| Niche + feeds you post in | Birding in the Pacific Northwest, one photo a day. You will find me in the Birds and Nature feeds. | Hobby and photo accounts |
| Work + personality + pronouns | Product designer at a small health startup. Accessibility, type, and the occasional bread photo. she/her | Professionals |
| Project + open door | Making an open-source budgeting app with my partner. Building in public, questions welcome. | Makers and developers |
Small things that help on Bluesky
Use a domain handle
Setting your handle to a domain you own (like yourname.com) shows you are who you say, and it is free if you already have the domain.
Say which feeds you post in
People browse topic feeds. Naming them helps visitors from those feeds recognise you.
Do not paste your X bio
Bios written for X often reference X culture. Rewrite it for the people on Bluesky.
Pin an introduction
A short post saying who you are and what you post makes starter pack visitors far more likely to follow.
Keep your Bluesky profile active without extra work
MicroPoster cross-posts what you already write on X, Threads or Mastodon to Bluesky natively, so new visitors always find recent posts under your new bio. Paid plans also check your Bluesky account for hiding labels every month.
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Frequently asked questions
How long can a Bluesky bio be?
256 characters, counted as visible characters, so an emoji counts as one. Your display name can be up to 64.
Can you put links in a Bluesky bio?
Yes. Bluesky turns web addresses in your bio into clickable links, and the link counts toward the 256 characters. Shorter domains leave more room for words.
Should I put my pronouns in my Bluesky bio?
Many people on Bluesky do, and it is common in display names too. It is your choice. If you add them, they take a few characters and nothing else.
Do I need to log in or connect my account?
No. The audit reads your public profile and recent public posts, the same things any visitor sees. You only type your handle.
Which parts are AI and which are measured?
The setup, consistency, engagement and content mix scores are calculated from your public data with fixed rules, so they are the same every time. The written review, the bio score and the bio rewrites come from an AI model that is given those numbers and your posts and told not to contradict them or invent facts about you.
Is it free?
Yes. Three audits a day, no account. Each result is kept for six hours, so opening your own audit again does not use one.
MicroPoster is not affiliated with Bluesky Social. The checker reads public data only. Last reviewed on October 9, 2026.