Caption and title length checker
Last updated
YouTube titles can run to 100 characters and descriptions to 5,000. TikTok and Instagram captions can run to 2,200 characters, per their developer docs, and Instagram allows 5 hashtags on a post. Facebook publishes no caption limit. Feeds show only the first line or two, so put the topic in the first 40 characters.
0 characters0 hashtags
- YouTube Shorts, description0 / 5,000 charactersYour description shows here
Feed cut: YouTube shows the first few lines of a description before "more"; two lines is our estimate. Unofficial.
- TikTok, caption0 / 2,200 characters@yournameYour caption shows here
Feed cut: Our estimate: about two lines before "more". Unofficial. Limit: TikTok's developer API limit, counted in UTF-16 units. TikTok publishes no in-app limit.
- Instagram Reels, caption0 / 2,200 characters@yournameYour caption shows here
Feed cut: Meta recommends 44 characters of text for Instagram Reels ads; it publishes no cut for posts. Unofficial. Limit: From Instagram's developer docs.
- Facebook Reels, caption0 characters, no published limit@yournameYour caption shows here
Feed cut: Meta recommends 40 characters of text for Facebook Reels ads; it publishes no cut for posts. Unofficial.
How long can a YouTube Shorts title be?
Up to 100 characters, the same as any YouTube video. The description can run to 5,000. Up to 3 hashtags show by the title, and with more than 60 on a video YouTube ignores them all.
What is TikTok's caption limit?
2,200 characters for videos posted through TikTok's developer API, counted in UTF-16 units, so some emoji count as two. TikTok publishes no in-app limit, so check the caption box in the app.
How long can an Instagram Reels caption be?
Up to 2,200 characters, per Instagram's developer docs. Instagram's help center allows up to 5 hashtags on a post.
Does Facebook limit Reels captions?
Facebook publishes no caption or hashtag limit. For Facebook Reels ads, Meta recommends 40 characters of text.
Where does each app cut a caption in the feed?
No app publishes it: the cut depends on the screen, the font and the language. The previews use our estimates: about two lines for YouTube Shorts titles and TikTok captions, and one line for Instagram and Facebook, where Meta recommends 44 and 40 characters of text for Reels ads.
| App | Title | Caption or description | Hashtags | Feed cut (unofficial) |
|---|---|---|---|---|
| YouTube Shorts | 100 characters | 5,000 characters | 3 show by the title; over 60, all ignored | About 2 lines, 76 characters |
| TikTok | No separate title | 2,200 characters (developer API) | None published | About 2 lines, 76 characters |
| Instagram Reels | No separate title | 2,200 characters (developer docs) | Up to 5 | About 1 line, 44 characters |
| Facebook Reels | No separate title | None published | None published | About 1 line, 40 characters |
How many hashtags should I use?
A few that describe the video. Instagram allows 5 on a post, YouTube ignores them all past 60, and TikTok publishes no limit.
Is my text sent anywhere?
No. The check runs in your browser. Nothing is sent or kept.
Sources
- YouTube Help: Edit video settingsChecked October 18, 2026
- YouTube Help: Use hashtags for search on YouTubeChecked October 18, 2026
- TikTok for Developers: Content Posting API: direct post referenceChecked October 18, 2026
- Meta for Developers: Instagram Platform: IG User Media referenceChecked October 18, 2026
- Instagram Help: Use hashtags on InstagramChecked October 18, 2026
- Meta Ads Guide: Instagram Reels video adsChecked October 29, 2026
- Meta Ads Guide: Facebook Reels video adsChecked October 29, 2026
- YouTube Help: Tips for video descriptionsChecked October 18, 2026
Make a short with its post copy written for each app in ViewGum