AI Bio Generator
Platform bios and a link-in-bio headline, sized to that platform's real character limit.
Fill out the form above and your results will appear here.
What is AI Bio Generator?
Writes 3-5 platform bios plus a link-in-bio headline, each checked against that platform's real character limit — a hard cap on some platforms, a length guideline on others.
How does it work?
- 1.Reads what you do, plus any optional details you filled in — name, profession, niche, skills, interests, audience.
- 2.Generates the exact number of bios requested (3-5), each genuinely different in angle, not a reworded copy of the last.
- 3.Respects the platform's real limit — a hard cap on Instagram, TikTok, X, and LinkedIn, a length guideline (not enforced) on Facebook and personal websites.
- 4.Never invents a profession, skill, or interest for a field you left blank — grounds every bio only in fields you actually filled in.
- 5.Computes the real character count for each bio in code after generation, rather than trusting the model's own count.
How to use it
- 1.Describe what you do in the main field.
- 2.Optionally fill in name, profession, niche, skills, interests, and audience — anything you skip is left out, not guessed at.
- 3.Pick your platform (each option shows its character limit) and a tone/style pair.
- 4.Pick how many bio options you want (3-5).
- 5.Click Write my bio and compare options against the shown character count.
Examples
Input
About: "I help freelance designers price their work with confidence" · Platform: Instagram (150 char) · Style: Professional
Output
Bio: "Helping freelance designers price with confidence, not guesswork. 5+ years in brand + product design." (142/150 chars.) Headline: "Pricing confidence for freelance designers."
Input
Same about field · Platform: TikTok (80 char) · Style: Minimal
Output
Bio: "Freelance designer. I teach you to charge what you're worth." (66/80 chars — noticeably shorter, matching the tighter limit.)
Tips
- •TikTok's 80-character limit is the tightest of any platform — cut everything except the single clearest hook if you pick it.
- •Leave optional fields blank on purpose when you want a shorter, punchier bio — every field you fill adds a specific detail the model has to fit into the same character budget.
- •Minimal style strips to the fewest words possible — pick it specifically when the character limit is tight (TikTok, Instagram), rather than relying on the model to shorten a longer style itself.
- •Facebook and Personal website have no hard limit, just a guideline — expect the bio to land close to but sometimes under that number, not exactly at it.
- •Regenerate per platform instead of reusing one bio everywhere — the limit and audience expectation genuinely differ per platform in this tool.
Use cases
- •Creators updating bios across multiple platforms who need each one sized correctly, not copy-pasted.
- •Freelancers and consultants writing a link-in-bio headline alongside their platform bio.
- •Anyone rebranding who wants several angles (Bold vs. Friendly vs. Minimal) to compare before committing.
- •New accounts writing a first bio from scratch with only a rough "what I do" sentence to start from.
Frequently asked questions
Will the bio actually fit the character limit?
Yes for platforms with a hard limit (Instagram, TikTok, X, LinkedIn) — for Facebook and Personal website, which have no enforced limit, it uses a length guideline instead. Every bio returned is checked against that limit, plus a separate link-in-bio headline.
Do I need to fill in Name, Profession, Niche, Skills, Interests, and Audience?
No — they're all optional detail layered on top of the main "What do you do?" field. Leave any of them blank and the AI works from what you did fill in instead of inventing specifics.
Which AI model writes the bio?
OpenAI GPT-4o-mini, which returns strict structured output so every bio and the headline are always clearly separated.
Can I use the same output across multiple platforms?
You can, but each platform has a different limit and audience expectation — regenerate per platform for the best fit rather than reusing one bio everywhere.