Respect the 160-character limit
X cuts bios at 160 characters, so every word has to earn its place. One positioning line, one proof point, one reason to follow.
Say what you do in plain words
Titles like "visionary" and "guru" say nothing. "Writes about pricing for SaaS founders" tells a visitor exactly what their feed gains by following you.
Include the keywords people search
Profile search matches bio text, so name your niche in the words people actually type. Two or three real terms beat a pile of buzzwords that read as spam.
Use hashtags and @mentions sparingly
One community tag or one @mention of your company can help people place you. More than that spends characters and pulls taps away from your profile.
Add one piece of social proof
A publication that featured you, a number you can stand behind, or a project people know. One real credential beats three adjectives.
End with a call to action
Tell visitors what to do next: follow, read the newsletter, check the pinned post. A bio that asks for nothing usually gets it.
Let your personality show
Witty, serious, or warm, the bio should sound like your posts do. A fun detail or a sharp one-liner makes a profile memorable and human.
Update it as you change
New project, new role, new milestone: the bio should keep up. A current bio signals an active account worth following.