A LinkedIn hook is the part of your post people see before "…see more": roughly the first 210 characters on desktop and 140 on a phone, capped at about three lines. A hook that earns the click usually has three parts: a specific detail, a bit of tension, and an implied promise of what the rest of the post delivers. Write it so it would still make sense if nobody read further.
LinkedIn is a scrolling app first. Your first line competes with every other post in the feed, and the "see more" fold decides whether the rest of your post exists for most readers. This is a repeatable way to write that first line without sliding into clickbait.
Where the fold falls
LinkedIn doesn't publish the exact cutoff, and it shifts with screen size and font settings. Independent tests consistently land in the same range:
| Where it's read | Visible before "see more" |
|---|---|
| Desktop feed | About 210 characters, up to three lines |
| Mobile app | About 140 characters, up to three lines |
Whichever limit runs out first wins. A blank line counts as a full line, so a one-word opener followed by an empty line burns two of your three lines on almost nothing. Plan for the mobile number: if your hook works in 140 characters, it works everywhere. The LinkedIn text formatter previews the cutoff on both desktop and mobile as you type.
The three-part hook
- A specific detail. A number, a name, a time frame, a concrete object. "412 cold emails" beats "a lot of outreach". Specifics signal that something real happened.
- Tension or surprise. Something that doesn't add up yet: a result that contradicts the effort, a choice most people wouldn't make, an outcome that went the other way.
- An implied promise. The reader should sense what they'll get by clicking: the method, the lesson, the explanation of the surprise.
You don't need all three spelled out. Often the detail and the tension do the work, and the promise is implied by the gap between them.
Example hooks, taken apart
These are illustrative examples of the pattern, not real case studies:
- "I sent 412 cold emails in 30 days. The one that worked was 11 words long." Detail: 412 emails, 30 days, 11 words. Tension: volume versus brevity. Promise: what those 11 words were.
- "My best hire didn't have a resume. She had a Google Doc." Detail: a Google Doc. Tension: it breaks a hiring norm. Promise: what was in the doc and why it worked.
- "We killed our roadmap on a Friday. Revenue went up the next month." Detail: a Friday, the next month. Tension: cutting plans and growing anyway. Promise: what replaced the roadmap.
Each works in under 140 characters, and each would make sense as a standalone line.