A LinkedIn post caps at 3,000 characters, but the limit that actually costs you is the one nobody counts: the three lines a reader sees before deciding whether to click. Paste a draft below to check it against every LinkedIn limit at once, and to see where the feed will cut it.
0/3,000
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Atta Ur Rehman Shah
Co-Founder @ Depost AI — Your AI content team for LinkedIn
now ·
The cut is measured by laying your text out at the feed's real width, not by counting to a fixed number of characters. Three short lines get truncated sooner than one long one.
Post
0/3,000
Headline
0/220
About section
0/2,600
Comment
0/1,250
Connection note
0/200
InMail body
0/2,000
Direct message
0/8,000
Everything here runs in your browser. Your draft stays on this device, follows you across our free tools, and is never sent to us.
The same editor
The toolbar above is the one inside Depost AI: same styles, same bullets, same counter, same preview. What the free version cannot do is the hard part, which is knowing what to write in the first place.
The draft starts from what has already worked on your audience: your hooks, your pillars, your posting patterns. This page can tell you a post is 240 characters. It cannot tell you the opening is one you have used four times.
Select a line and rewrite it, in your voice rather than in the flat register every generator defaults to. Accept, try again, or discard, without losing the draft you had.
Images, video, documents, and polls attach in the same editor, and the infographic is designed against the post rather than picked from a stock library afterwards.
Send a finished draft to the queue or to the next free slot, published through LinkedIn’s official API. Nothing goes out until you approve it.
Leave a note on a selection, assign a reviewer, and have the first comment written with the post so it is ready the moment the post goes live.
Undo here lasts as long as the tab does. In the product, the version you had on Tuesday is still there on Friday.
Connect LinkedIn and you have a strategy, your pillars, and your first post ideas in about fifteen minutes.
Verified against LinkedIn on 18 August 2026. The post limit is the one enforced in the Depost AI editor, so a draft that passes here passes there.
| Field | Limit | Where it applies |
|---|---|---|
| Post | 3,000 | Feed post, article intro, document post description |
| Headline | 220 | Profile headline |
| About section | 2,600 | Profile About / summary |
| Comment | 1,250 | Comments and replies |
| Connection note | 200 | Note attached to a connection request |
| InMail body | 2,000 | InMail (Premium, Sales Navigator, Recruiter) |
| Direct message | 8,000 | LinkedIn messaging |
Three thousand characters is a ceiling, not a target. The number that changes your results is the three lines the feed shows before it collapses the rest behind "see more", because that is the whole of what most people will ever read. Everything after it is opt in.
That cut is measured in lines, not characters, which is why a fixed number like 210 is unreliable advice. Break your opening into two short lines and you have spent the preview on eleven words. Write one continuous sentence and you get considerably more. The preview tab above lays your text out at the feed's real width and reports where the cut actually falls on the words you wrote.
The practical use of a counter, then, is not staying under 3,000. It is deciding what earns a place in the first three lines, and checking that your headline still tells a buyer what you do in 220.
Brief your team once. It studies, plans, writes, designs, and schedules. You approve.
Your brief comes with you: once you're set up, it's the team's first job.
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