LinkedIn character limits in 2026: posts, comments, headline, About

A LinkedIn post can hold up to 3,000 characters. That is the one figure on this page that LinkedIn itself documents. Every other number you will see quoted for comments, headlines, About sections and messages is a third-party estimate. Put plainly: only the 3,000-character post limit is documented by LinkedIn; other figures are third-party estimates. The estimates come from third-party tests, they are good enough to plan around, and LinkedIn has not published them, so treat them as approximate.

Here are the working figures this site uses:

• Post: 3,000 characters. Documented by LinkedIn. Company page updates appear to use the same cap.
• Comment: about 1,250 characters. Third-party estimate.
• Headline: about 220 characters. Third-party estimate.
• About section: about 2,600 characters. Third-party estimate.
• Message: about 8,000 characters. Third-party estimate.

The rest of this guide explains what those numbers mean in practice: what actually gets counted, why a post can be rejected when the visible count looks fine, how long a post should be, and what to cut when you are over.

Everything you type takes space. Letters, digits and punctuation count. Spaces count. A line break counts. A blank line is two line breaks and counts as two. A post made of many short paragraphs spends part of its budget on structure, which is usually a good trade for readability but worth knowing about when you are close to the edge.

A web address is made of characters like any other text, so a long link uses as many characters as it has. If you need one in the post, keep it short, and consider whether it belongs there at all or in a first comment instead.

Hashtags count like any other word. A line of five hashtags can use fifty characters or more, and they sit at the end of the post where you are most likely to run out of room.

So far this is the same as in any text editor. The surprises come from characters that look like one thing and are stored as another.

Software usually measures text length in code units, not in the letters a person sees. The common encoding on the web, UTF-16, stores ordinary English letters as one unit each. It stores many symbols and every emoji as two or more.

This matters for two kinds of text:

• Styled text. Bold, italic and script text made with Unicode letters uses characters from a different part of the Unicode table, and most of those take two units each. The word “Hello” in plain letters is five units. In bold sans it is ten.
• Emoji. A simple emoji is usually two units. A combined emoji, such as a family, a flag or a person with a skin tone and a profession, is built from several characters joined together and can be seven units or more, even though it looks like one picture.

LinkedIn appears to measure its limit in these units, not in the pictures you see. So a post that is heavily styled can hit the 3,000 limit with around half that many visible characters. If your post is rejected as too long while the editor’s count looks safe, the likeliest explanation is styled text or emoji.

The LinkedIn character counter shows both numbers side by side for this reason. The large figure is what you see. The second figure is the UTF-16 count. When the two disagree, plan around the larger one, and treat it as the safer guide to the real limit.

Posts

3,000 characters, documented. That is a long text: it fits a detailed story with a clear structure. In practice the limit is rarely the constraint for a post that people want to read. The fold is, because most readers only see the opening lines before the “see more” link, as the guide to the see more fold explains.

Comments

About 1,250 characters. Comments are read in a narrow column and long ones collapse after a few lines, so lead with your point. If a comment needs more than a few hundred characters it may be better as a post of its own.

Headline

About 220 characters. Only the start of it shows in many places, such as next to your name on a comment or in search results, so put the words that matter first. The headline is also searched, so keep job titles and skills in plain letters instead of styled ones. Styled letters are different characters, and a search for the plain word will not match them.

About section

About 2,600 characters. Only the first few lines show on your profile before “see more”, which makes its opening as important as a post’s hook.

Messages

About 8,000 characters per message. Few messages should be anywhere near that. A short, specific message is more likely to be read in full.

For the fields other than posts, the counter on this site tracks the post limit in its bars, so compare the visible count with the figure above yourself. The table on the counter page lists all five and labels which are documented and which are approximate.

LinkedIn gives no target length, and length should follow what you have to say. The counter on this site turns green between 1,200 and 1,500 characters. That range is an editorial suggestion, not a reach threshold: it is roughly enough room for a hook, a short story and a takeaway without padding. We have no data showing that a post in that range travels further than a shorter one.

A few practical points follow from how people read:

• Short posts are not worse. A sharp post of a few hundred characters can do the job of a long one, because the reader gets to the end.
• Long posts need structure. Past a couple of thousand characters, short paragraphs, clear groups and a strong opening matter more, because the reader has to be able to find their place. Line breaks and spacing cover the mechanics.
• The opening does the selling. Whatever the total length, the part above the fold is what most people judge the post on.

If you find yourself near 3,000 characters regularly, consider whether you have one post or two.

The counter changes colour as a post grows so you notice limits before LinkedIn does. Below 1,200 characters it is neutral. From 1,200 to 1,500 it is green, our suggested range. It is neutral again until 2,800, when it turns amber to show that about 200 characters remain. Above 3,000 it turns red, and a message explains that the post will not fit in a single post.

These colours use the visible character count, which is why the second UTF-16 figure matters. If you have used a lot of styled text, the amber warning may arrive later than the real limit. For that case the counter has a separate warning: once the styled weight (the UTF-16 figure) passes 3,000, it highlights that number and says LinkedIn may reject the post, even if the visible count is still below 3,000. When in doubt, look at both numbers.

When a draft is over, work through these in order, checking the counter after each step:

1. Remove styling you do not need. Styled letters cost two units each. Converting a long bold paragraph back to plain text can save hundreds of units without losing a word, and the plain text converter does it in one step. Keep styling for a short phrase or two.
2. Swap emoji bullets for plain ones. A • is one unit. Many emoji are two or more.
3. Collapse blank lines. One empty line between ideas is enough.
4. Cut the warm-up. The first paragraph of a draft often restates the hook. Delete it and see whether anything is missed.
5. Shorten or remove links. A long web address uses as many characters as it has.
6. Move detail to a first comment. Sources, extra examples and links can go in a comment you post straight after publishing.

If the draft is still long after these steps, it is probably two posts, and splitting it can give you a reason to come back to the subject.

Does LinkedIn publish the comment and headline limits?

No. Only the post limit of 3,000 characters is documented. Comment, headline, About and message figures are third-party estimates. The comment figure in particular has changed in the past. Treat them as a planning guide and leave yourself some room.

Do spaces and line breaks count?

Yes. Every space, line break and blank line counts toward the limit.

Is the limit the same on mobile and desktop?

We have no evidence that it differs. The fold does differ between devices, which affects how much of your post is visible, but that is a separate matter from the length limit.

Why does the counter show two numbers?

Because people and software count differently. The first is what you see, one for each letter or emoji. The second is the UTF-16 unit count, which is how LinkedIn appears to measure the limit. For plain text they match, and with styled text or emoji the second is larger.

What happens if I go over?

LinkedIn will not publish a post over the limit. The counter lets you copy text even when it is red, so you can move it elsewhere to edit, but you will have to trim it before it will post.