LinkedIn formatter › Character limit guide
LinkedIn character limits — complete guide
A full breakdown of every LinkedIn character limit in 2025 — including the Unicode counting quirk that catches formatters out.
Character limits by field
| Field | Limit |
|---|---|
| Post | 3,000 |
| Comment | 1,250 |
| Headline | 220 |
| About section | 2,600 |
| Job title | 100 |
| Company name | 100 |
| First name / Last name | 40 each |
| Connection message | 300 |
| InMail subject | 200 |
| InMail body | 1,900 |
| Article title | 150 |
| Article body | 125,000 |
The Unicode character counting quirk
If you use a LinkedIn text formatter to add bold or italic text, your post will hit LinkedIn's character limit sooner than you expect. Here's why.
Bold and italic Unicode characters (like 𝗯𝗼𝗹𝗱) live in the supplementary Unicode plane above U+FFFF. They are encoded in UTF-16 as surrogate pairs — two 16-bit code units per character. LinkedIn's character counter uses string.length (UTF-16 code units), so each bold or italic character counts as 2.
// Plain text
"hello".length // → 5
// Bold Unicode text
"𝗵𝗲𝗹𝗹𝗼".length // → 10 (not 5!)
Our LinkedIn text formatter mirrors this behaviour exactly, so the character count you see here will match what LinkedIn shows. Most other tools use [...str].length (code points), which undercounts formatted text and causes unexpected “post too long” errors on LinkedIn.
The "see more" fold
LinkedIn post text is truncated at approximately 210 characters and a “see more” link is shown. Only the first 210 characters are visible without interaction — this is your hook. Use it wisely. Our formatter's live preview shows you exactly where the fold falls.
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Check your character count
Our LinkedIn formatter counts characters exactly as LinkedIn does — including Unicode formatting.
Open formatterAlso see: How to bold text on LinkedIn · LinkedIn formatting tips