AltF Creator
Social media character limits, with a live checker
Paste a caption once and see it counted against every major limit: YouTube titles (100) and descriptions (5,000), Instagram captions (2,200), TikTok captions (4,000), X posts (280), Threads (500), LinkedIn posts (3,000), Pinterest titles (100) and descriptions (500), and Facebook posts. The checker also shows roughly what appears before the "more" link.
- Free, no sign-up
- Runs in your browser
- Limits sourced from each platform
- No fake scores or view predictions
Caption and post length checker
Paste a caption, title or bio once and see how it fits every platform at the same time. Emoji count as one character, the way people see them.
- Characters
- 0
- Words
- 0
- Hashtags
- 0
Type or paste text to check it against each platform.
| Platform | Field | Used / max | Remaining | Status |
|---|---|---|---|---|
| YouTube | Video title | 0 / 100 | 100 | Fits |
| YouTube | Description | 0 / 5,000 | 5,000 | Fits |
| YouTube | Tags (all combined) | 0 / 500 | 500 | Fits |
| Post or Reel caption | 0 / 2,200 | 2,200 | Fits | |
| Bio | 0 / 150 | 150 | Fits | |
| TikTok | Video caption | 0 / 4,000 | 4,000 | Fits |
| TikTok | Bio | 0 / 80 | 80 | Fits |
| X | Post (standard account) | 0 / 280 | 280 | Fits |
| Threads | Post | 0 / 500 | 500 | Fits |
| Post | 0 / 3,000 | 3,000 | Fits | |
| Pin title | 0 / 100 | 100 | Fits | |
| Pin description | 0 / 500 | 500 | Fits | |
| Post | 0 / 63,206 | 63,206 | Fits |
“Close to limit” means 90% or more of the cap. Limits checked November 2026; platforms change them without notice. Sources: YouTube Help Center(opens in a new tab), Instagram Help Center(opens in a new tab), TikTok Support(opens in a new tab), X Help Center(opens in a new tab), Threads Help(opens in a new tab), LinkedIn Help(opens in a new tab), Pinterest Help(opens in a new tab), Facebook Help Center(opens in a new tab).
Runs in your browser — nothing is uploaded.
Character limits by platform
| Platform | Field | Limit | Shown before "more" | Source |
|---|---|---|---|---|
| YouTube | Video title | 100 | about 70 | YouTube Help Center(opens in a new tab) |
| YouTube | Description | 5,000 | about 157 | YouTube Help Center(opens in a new tab) |
| YouTube | Tags (all combined) | 500 | - | YouTube Help Center(opens in a new tab) |
| Post or Reel caption | 2,200 | about 125 | Instagram Help Center(opens in a new tab) | |
| Bio | 150 | - | Instagram Help Center(opens in a new tab) | |
| TikTok | Video caption | 4,000 | about 100 | TikTok Support(opens in a new tab) |
| TikTok | Bio | 80 | - | TikTok Support(opens in a new tab) |
| X | Post (standard account) | 280 | - | X Help Center(opens in a new tab) |
| Threads | Post | 500 | - | Threads Help(opens in a new tab) |
| Post | 3,000 | about 210 | LinkedIn Help(opens in a new tab) | |
| Pin title | 100 | - | Pinterest Help(opens in a new tab) | |
| Pin description | 500 | - | Pinterest Help(opens in a new tab) | |
| Post | 63,206 | about 125 | Facebook Help Center(opens in a new tab) |
Limits checked November 2026. "Shown before more" is approximate and changes with screen size. X's 280 characters is for standard accounts; Premium allows longer posts.
Social media character limits, with a live checker: questions and answers
Do spaces and emoji count as characters?
Yes, on every platform listed. Some platforms count certain emoji as two characters.
Are these limits current?
They were checked in November 2026 against each platform's help centre. Platforms change limits without notice, so each one links to its source.
Creator tools and guides
69 free creator tools on AltFTool
Focused tools for one job each, grouped by the part of the work they help with. Each tool says whether it runs in your browser or uses a server.
Video editing and files
Captions, subtitles and transcripts
Titles, thumbnails and descriptions
Get your channel found
Links from real, relevant sites help a channel, podcast or portfolio show up in search. These AltFTool lists are checked by hand; pick the ones that fit your niche and skip any that ask you to pay for links.
Everything you type into AltF Creator stays in your browser. Your upload plan is saved on this device only, and nothing is sent to AltFTool or any platform.
Why the first line matters most
Every feed cuts long captions. On Instagram only about the first 125 characters show, and on LinkedIn about 210 before "see more". Put the hook, the question or the key detail in the first line, and the hashtags and links at the end.