Character Limits by Platform and Field
Pick a platform or a field to see the limit, how it is counted and when it was checked.
X (Twitter)
| Field | Character Limit | Verified |
|---|---|---|
| Post | 280 | 2026-07-26 |
| Post (Premium) | 25,000 | - |
| Bio | 160 | - |
| Display name | 50 | - |
| Field | Character Limit | Verified |
|---|---|---|
| Caption | 2,200 | 2026-07-26 |
| Bio | 150 | - |
| Comment | 2,200 | - |
| Hashtags | 30 max | 2026-07-26 |
| Field | Character Limit | Verified |
|---|---|---|
| Post | 63,206 | - |
| Comment | 8,000 | - |
| Bio | 101 | - |
| Ad text | 125 recommended | - |
LINE
| Field | Character Limit | Verified |
|---|---|---|
| Message | 10,000 | - |
| Status message | 500 | - |
YouTube
| Field | Character Limit | Verified |
|---|---|---|
| Video title | 100 | 2026-07-26 |
| Video description | 5,000 | 2026-07-26 |
| Comment | 10,000 | - |
| Channel About | 1,000 | - |
TikTok
| Field | Character Limit | Verified |
|---|---|---|
| Caption | 4,000 | - |
| Bio | 80 | - |
| Username | 24 | - |
Threads
| Field | Character Limit | Verified |
|---|---|---|
| Post | 500 | 2026-08-02 |
| Bio | 150 | - |
| Field | Character Limit | Verified |
|---|---|---|
| Post | 3,000 | - |
| About | 2,600 | - |
| Headline | 220 | - |
Bluesky
| Field | Character Limit | Verified |
|---|---|---|
| Post | 300 | 2026-07-26 |
| Bio | 256 | 2026-07-26 |
| Display name | 64 | 2026-07-26 |
Mastodon
| Field | Character Limit | Verified |
|---|---|---|
| Post | 500 | 2026-08-02 |
Misskey
| Field | Character Limit | Verified |
|---|---|---|
| Note | 3,000 | 2026-08-02 |
Discord
| Field | Character Limit | Verified |
|---|---|---|
| Message | 2,000 | 2026-07-26 |
| Message (Nitro) | 4,000 | 2026-07-26 |
| Custom Status | 128 | - |
| About Me | 190 | - |
| Nickname | 32 | 2026-07-26 |
| Field | Character Limit | Verified |
|---|---|---|
| Message | 65,536 | - |
| Message (Business) | 1,600 | - |
| About | 139 | - |
| Group name | 100 | - |
Slack
| Field | Character Limit | Verified |
|---|---|---|
| Message | 40,000 | 2026-07-26 |
note
| Field | Character Limit | Verified |
|---|---|---|
| Article body | No limit | - |
| Field | Character Limit | Verified |
|---|---|---|
| Description | 500 | - |
| Bio | 160 | - |
| Pin title | 100 | - |
Google Search
| Field | Character Limit | Verified |
|---|---|---|
| Meta description | 120 | - |
"Verified" is the date the number was confirmed in official documentation or help pages. Items marked "-" could not be confirmed in an official primary source, so the previously published value is retained. Limits are subject to change.