How to use this tool
- Paste your LinkedIn post into the box above.
- Everything highlighted in blue is what shows before "see more" in the feed.
- Rewrite that highlighted portion until it reads as a complete thought on its own.
The number that actually matters: your first 140–210 characters
LinkedIn truncates posts in the feed well before the full 3,000-character limit kicks in. On desktop, roughly the first 210 characters show before "see more" appears. On mobile, that cutoff shrinks to somewhere between 140 and 210 characters, varying by screen size and device.
That opening block is doing almost all the work. If it doesn't hook the reader, the rest of the post, no matter how good, never gets read. Most engagement decisions happen in that first line and a half.
LinkedIn's actual limits
| Field | Limit |
|---|---|
| Post (feed) | 3,000 characters |
| Headline | 220 characters |
| About / summary section | 2,600 characters |
| Article | 125,000 characters |
The 3,000-character post cap is rarely the constraint that matters. The feed truncation point, well under that, is the real design boundary for how you open a post.
Writing to the cutoff, not around it
Since you don't control exactly where the truncation lands on any given reader's screen, the safest approach is to make the first 140 characters work as a complete, compelling thought on their own. Don't build a sentence that only makes sense once "see more" gets clicked. Write the first line so it earns the click instead of requiring it.