LinkedIn post, headline, and character limits, explained
More room than X or Instagram — but the fold still decides what gets read.
Updated September 2026
LinkedIn's post limit — 3,000 characters — is generous compared to X's 280 or Instagram's visible ~125. But LinkedIn has the same fundamental pattern as every other platform covered in this series: a much smaller number than the official limit controls what a scrolling reader actually sees before deciding whether to engage.
What's actually visible: ~140–210 characters
In the main feed, LinkedIn cuts a post off after roughly 140–210 characters (the exact point shifts slightly by device and post formatting) and shows a "…see more" link. Most readers scrolling their feed won't click it unless the opening lines have already earned their attention. That means, just like the guides on X and Instagram, your first two or three lines are doing almost all the work of getting someone to read the rest.
Every LinkedIn limit in one place
| Field | Limit | Visible before truncation |
|---|---|---|
| Post | 3,000 characters | ~140–210 characters |
| Headline | 220 characters | ~70 in mobile search |
| About section | 2,600 characters | ~300 on profile |
| Connection request note | 300 characters | Fully shown |
| Comment | 1,250 characters | Fully shown |
| Article | ~125,000 characters | — |
Your headline works harder than you'd think
LinkedIn's headline field defaults to your job title, but it's fully editable and shows up next to your name almost everywhere on the platform — in search results, comments, and connection requests. With only about 70 characters visible in mobile search, the most useful information (what you actually do, or who you help) needs to come first, not your company name or a string of buzzwords that get cut off before saying anything.
The About section is a "click to expand," not a wall of text
At 2,600 characters, LinkedIn's About section has room for a real narrative — but only the first ~300 characters show before a visitor has to click "see more." Treat those first couple of sentences as their own miniature pitch: assume that's all many visitors will ever read, and put the rest to work for the smaller number of people who click through.
Connection requests: shorter is genuinely better
Unlike posts, About sections, or headlines, a connection request note isn't truncated at all — the recipient sees the whole 300-character note as written. That removes the "hook" problem, but introduces a different one: there's nowhere to hide a rambling ask. A short, specific reason for connecting tends to convert far better than a note that uses the full 300 characters to explain itself.
Frequently asked questions
How many characters can a LinkedIn post be?
3,000 characters. Only the first 140–210 characters or so show in the feed before "See more," so the opening lines carry most of the weight.
How many characters is a LinkedIn headline?
220 characters, though only roughly the first 70 show in mobile search results — worth front-loading the most important role or keyword.
How long can a LinkedIn About section be?
2,600 characters. On the profile page, only about the first 300 characters show before a visitor has to click to expand it.
What is the character limit for a connection request note?
300 characters, and the whole note is shown to the recipient — there's no truncation, so keep it genuinely concise rather than using the full limit just because it's there.
Check your post or headline length live as you write using CounterWord's counter, or run a draft through the Organic Writing Checker to make sure your opening lines don't lean on filler before the fold cuts them off.