
How to Write a Social Media Bio That Fits Every Platform
The same three facts have to fit 80 characters on TikTok and 220 on a LinkedIn headline. Write the short one first and everything else is that plus room.
Field notes
Playbooks, teardowns and the occasional argument — everything we have learned helping creators grow across every major platform.

The same three facts have to fit 80 characters on TikTok and 220 on a LinkedIn headline. Write the short one first and everything else is that plus room.

Twenty-five characters an option on X, about twenty on an Instagram story sticker, sixty-five on a YouTube community poll. None of them agree with each other.

The pinned comment is the only part of a published video you can still edit. That is what it is for: the things that change, and the thing you got wrong.

A blog post and a newsletter issue are the same words in a different container. The reader is what changed, and the reader is in an inbox with a thumb.

Somebody taps a bio link seconds after watching one specific thing, looking for that thing. Almost every link page is ordered by what its owner values instead.

A series prefix is a fixed cost paid on every episode forever, chosen when episode one is the only thing that exists and the prefix still looks tidy.

Everybody can name four themes. The plan fails at the point where three posts of the same one go out in a row because that is the order the ideas arrived in.

Eighty characters on TikTok, a thousand on a YouTube channel. The numbers, what happens when you exceed them, and the two networks that quietly delete your line breaks.

All three answers are correct. Which one applies depends on who is counting, and the gap is why a caption that looks fine gets rejected by the form before the platform sees it.

Everything after the fold is read by people who already decided to read. The first line is the only part that talks to everyone else, and it is usually the part written last.

Two posts is never a result. The confounds - time, day, subject, an audience that has already seen one version - are larger than any caption effect you are looking for.

The two style guides agree about almost every word in almost every title. The exception is prepositions of four letters or more, and that single rule is the whole difference.