Free tool
LinkedIn Character Limits Reference
Every LinkedIn character limit in one place — posts, headlines, About, comments, connection notes, and DMs.
| Field | Limit | Note |
|---|---|---|
| Post | 3,000 | ~700 visible on desktop, ~210 on mobile |
| Headline | 220 | Under 180 shows fully on mobile |
| About / Summary | 2,600 | 300 chars visible before "see more" |
| Comment | 1,250 | Builds recognition fast |
| Connection note | 300 | Keep it specific |
| Message / DM | 8,000 | Shorter gets replies |
Quick tips
Posts truncate early
Desktop shows ~700 characters before “see more”; mobile shows ~210. Put your hook in the first two lines.
Headlines matter most
Your headline appears everywhere — feed, search, comments, connection requests. Lead with who you help, not your job title.
Connection notes
300 characters is plenty. Two tight, specific sentences beat a full paragraph.
Spaces count
Spaces, line breaks, and punctuation all count toward the limit. Emoji count as one or two characters.
Check your text against these limits live
Use our character counter to see exactly where you stand before you post.
Open the character counter →Frequently asked questions
What is the LinkedIn post character limit?
Posts allow up to 3,000 characters. Desktop shows about 700 before 'see more'; mobile shows about 210. Put your hook in the first two lines.
What is the LinkedIn headline limit?
Headlines are capped at 220 characters, with about 180 showing fully on mobile. Lead with who you help and the outcome, not just your title.
What is the LinkedIn About section limit?
The About/Summary section allows 2,600 characters, with about 300 visible before the 'see more' link.
What is the LinkedIn DM character limit?
Messages and DMs allow up to 8,000 characters, though shorter messages consistently get better reply rates.
More free tools
Keep building your presence with these related tools.
LinkedIn Engagement Rate Calculator
Calculate your LinkedIn engagement rate and benchmark it against B2B averages.
LinkedIn Character Counter
Count your text against every LinkedIn limit — posts, headlines, comments, DMs.
LinkedIn Post Formatter
Fix line breaks, bullets, tabs, and double spaces before you publish.