Social Media Character Limits 2026: Every Platform, One Page

Instagram’s bio field is small on purpose. It’s meant to be a one-line pitch, not a paragraph. Captions are far more generous, but almost nobody sees past the first two lines. Most readers tap away before reaching “…more.” That makes the real limit that matters for engagement closer to 125 characters than the full 2,200.

Most people already know the 280-character post limit. Two smaller details trip people up more often. Every link counts as exactly 23 characters, no matter how long the real URL is. Every emoji counts as 2 characters instead of 1, since X measures in raw code units, not visible symbols. Premium subscribers get a much larger ceiling, up to 25,000 characters for long-form posts.

TikTok’s bio limit is the tightest on this list. Most accounts get just 80 characters. TikTok has been quietly testing longer bios for some users, up to 120–180 characters. So don’t be surprised if yours looks different from a friend’s. Captions have grown a lot over the years, from 300 characters up to as much as 4,000. Even so, the feed only shows the first 100–150 before cutting you off.

Discord splits identity into two fields, each with its own rules. Your permanent username stays lowercase, with no spaces allowed. Your display name is different — it allows spaces, symbols, and full Unicode styling. This is exactly why fancy Unicode text works so well for Discord display names, but not for the username field underneath it.

Video titles have a hard 100-character cap. But search results and suggested-video tiles cut most titles off around 70 characters. This means the last third of a long title is usually wasted, on both desktop and mobile. Channel descriptions get a much smaller budget than video descriptions, just 1,000 characters. It’s easy to forget that when writing both on the same day.

Facebook’s personal-profile bio is unusually short, just 101 characters. That’s noticeably tighter than a Facebook Page’s short description, which gets 255. Posts themselves allow over 63,000 characters. But the feed truncates almost everything past 480 characters behind a “See More” link. Long posts rarely get read in full anyway.

LinkedIn’s About section looks generous, at 2,600 characters. But only the first ~300 show on desktop, and closer to 200 on mobile, before readers have to click “See more.” Most never do. The headline field is prime real estate. It shows up everywhere your name appears, not just on your profile page.

Pin descriptions allow up to 500 characters. But the feed only shows the first 50–60 before it’s cut off. That means your first sentence is doing almost all the work. Board names are capped tightly at 50 characters, with only 30–35 visible in most layouts.

Threads shares its bio directly with Instagram. Editing one edits the other. Unlike X, Threads does not shorten links. Paste a long URL into a post and it eats into your 500-character limit at its full, real length. That catches a lot of people off guard the first time.

Snapchat keeps identity simple. There’s a short, permanent-feeling username, and a display name your friends actually see. The catch: usernames can only be changed once every 12 months. It’s worth testing a name in a preview tool before you commit to it for a year.

Reddit’s profile bio is quietly one of the more generous limits on this page, at 200 characters. Most people never notice it, since Reddit culture builds a presence through posts and comments, not profile pages. Text posts can run extremely long here, up to 40,000 characters, which is unusual among the platforms on this page.