What your bio's job is
People reach your profile from a reply, a repost or a recommendation. They look at your name, photo, bio and pinned post, and decide fast. The bio has to answer three things: who is this, what do they post, and why should I care.
Think of your profile as a short path: the reply that brought them, the bio that explains you, the pinned post that proves it, then the follow button. The bio is where most visitors drop off, because it's where they decide whether your posts are for them.
It is not a résumé. A list of job titles tells people who you were. They want to know what will show up in their feed if they follow.
A simple bio formula
Most good bios cover three things, in some order:
- What you do, in plain words.
- What you post about, specific enough to picture.
- Proof or personality: one credible detail, a result, or a line that sounds like you.
Optionally, a call to action, like your newsletter or product. X has a separate website field, so the bio doesn't need to hold the URL.
Example bios
Six fictional accounts, written to the formula:
| Account | Bio |
|---|---|
| B2B SaaS founder | Building scheduling software for clinics. Posting what I learn about selling to doctors, pricing, and growing a bootstrapped company. |
| Fitness coach | Strength coach for busy parents. Three workouts a week, no gym required. Daily tips on training, food and staying consistent. |
| Indie developer | Shipping small apps solo. Writing about SwiftUI, marketing for developers, and the real numbers behind side projects. |
| Newsletter writer | I read the finance research so you don't have to. Plain-English summaries every Tuesday. |
| Agency owner | Running a 12-person design agency. Threads on pricing, hiring and client work, from someone who's made most of the mistakes. |
| Data analyst | SQL, dashboards and the questions behind them. Practical analytics for people who aren't data scientists. |
Each one says what the reader gets. None lists five job titles or leans on a buzzword.
Before and after
Four common bios, rewritten. Fictional accounts again:
| Before | After | What changed |
|---|---|---|
| CEO at a software company. Investor. Speaker. Coffee lover. | Running a 20-person logistics software company. Posting what I learn about hiring, pricing and selling to old-school industries. | Titles replaced with what you'll post |
| Helping creators grow and level up their brand. | I help newsletter writers get their first 1,000 subscribers. Weekly threads on the growth tactics that worked for my clients. | A vague promise made specific |
| Just a girl who loves fitness, food and fun. | Strength coach for busy parents. Three short workouts a week, simple food rules, no gym needed. | Personality kept, a reason to follow added |
| Writer. Thinker. Builder. | Writing about the economics of small software businesses. Former accountant, now running two apps. | Abstract nouns replaced with a topic and proof |
Write for the account's goal
The formula stays the same, but the emphasis shifts with what the account is for:
- Personal brand: lead with what you post. Your job title matters less than your topics.
- Company account: say what the product does and for whom, in plain words. A line about who runs the account makes it feel less like a billboard.
- Selling a service: who you help and the result they get, then where to start (a newsletter, a free guide, a booking page in the website field).
- Looking for work: what you do, the kind of work you want, and one piece of proof.
If you're not sure what the account is for, decide that first. A bio that tries to serve every goal ends up serving none.
Bio mistakes to cut
- A list of titles: “CEO | Investor | Speaker | Dad”. Tells people nothing about your posts.
- Vague promises: “Helping people level up”. Level up at what?
- Inside jokes only your friends get.
- A wall of hashtags or emoji. Hard to read, and plain keywords describe you better.
- “Views are my own.” Everyone assumes it.
- Stale details: last year's job, or a launch that ended months ago.
The rest of the profile
The bio works with everything around it. Get these right too:
- Name: your name, optionally with a short descriptor, like “Maya | Strength coach”. Keep it readable.
- Photo: a clear face for a personal account, a simple logo for a company.
- Header: repeat what you post about. X image sizes covers the dimensions.
- Pinned post: your best introduction or most useful thread. See what to pin on X.
- Website: your product, newsletter, or a page that collects your links.
Test it and keep it current
A practical test: show your bio to someone outside your field and ask what they'd expect you to post. If their answer doesn't match your last 20 posts, either the bio or the posts need to change.
Your bio should also match your brand voice. If your posts are dry and practical, a bio full of exclamation marks feels off. In Extudio, your tagline, one-liner and voice live in the brand kit, which every draft reads, so your posts and your bio tell the same story.