A profile bio has an unusually difficult brief. It has a tight character limit, it is read by people already deciding whether to follow you, and it competes with a name, a photo and a grid of posts for attention. Most bios fail by spending their limited space on atmosphere instead of information.
Lead with what you do
The first line is the only line most people read, so it should answer the question a visitor actually has, which is what this account is for. “Freelance photographer, Liverpool” is more useful to a potential client than “capturing moments that last forever”, and it is more useful to a potential follower too.
Atmosphere belongs at the end, if anywhere. Someone who has decided to follow you does not need convincing; someone who has not will not be convinced by a poetic line.
Fit the limit
The most common mistake is writing a bio that is too long for the field, so the platform truncates it and the important part disappears. Read the character count and count your characters, because a suggestion that reads well can still be two hundred characters over.
Write to the limit rather than trimming later. It forces the point across, which is usually a better bio anyway.
Add the one thing you want them to do
If you have a link worth visiting, put it in and make it the single most important one, because Instagram only makes one clickable and anything else has to be written out. If you would rather people message you, say that instead of leaving them to guess.
Availability is worth stating if it applies. A booking hint or a response time gives someone a reason to make contact now rather than later.
Make it sound like you
Treat suggestions as scaffolding. Swap in what you actually do, in the words you would use, and remove anything that sounds borrowed. A bio that reads slightly stiff is a small signal that does not quite add up, and it puts off the people you most want following.
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Platform differences worth knowing
Each platform imposes its own constraint, and a bio that works on one is usually wrong for another. Instagram allows about a hundred and fifty characters plus a link, and only the first line or two display before a more link, so the front has to carry the point on its own.
TikTok is shorter and treats the bio more like a caption, with room for a line of context and a link. LinkedIn allows considerably more text but rewards plain professional language, so the same phrasing that works on Instagram reads as marketing there and gets ignored.
For a business account the calculation changes, because a link becomes clickable and there is room to be more specific about what you sell. Being vague on a profile that exists to generate enquiries is a waste.
What to leave out
Most bios spend space on things that do not help. A list of every tool you use is not a benefit. A line about loving your family is fine at the end but cannot lead. And motivational framing aimed at yourself occupies the most valuable characters on the page.
Equally, a bio that only lists keywords is recognisable as such, and it reads as though the account is being run rather than written. Specificity is what makes a bio convincing: one real detail beats a page of generic claims.
Update it when what you do changes. A bio that describes something you no longer offer is worse than an empty one, because it sends people looking for something you have stopped doing.