Free tool
Check a caption against TikTok, Instagram and YouTube character and hashtag limits, and preview how it gets cut off in the feed.
0 / 4,000
4,000 in the TikTok app, but 2,200 when posting through TikTok’s API (including schedulers like Reelvia). The feed shows roughly the first 100 characters.
0 / 2,200
Up to 30 hashtags; text after ~125 characters is behind “more”.
0 / 5,000
Description limit is 5,000; the title is limited to 100 characters. Over 60 hashtags and YouTube ignores them all.
Every platform truncates captions in the feed, often after about 100–125 characters. Put the hook or the key information first, and keep hashtags at the end.
Three to five specific hashtags usually beat thirty generic ones. Use the hashtag trend checker to see which tags top posts in your niche actually use.
TikTok captions can be up to 4,000 characters in the app. Posts published through TikTok's API, including schedulers like Reelvia, are limited to 2,200 characters.
Instagram captions can be up to 2,200 characters with a maximum of 30 hashtags.
Titles can be up to 100 characters and descriptions up to 5,000. If you add more than 60 hashtags, YouTube ignores all of them.
This checker counts each emoji as one character, the way it appears to readers.
See how a TikTok or Instagram hashtag is performing right now: median views, related hashtags and trending sounds.
Find the hours and days when top posts for a hashtag or creator get the most views, in your timezone.
Calculate engagement rate from your own numbers, or look up any public TikTok creator's recent videos.
Reelvia
Schedule videos to TikTok, Instagram Reels and YouTube Shorts from one queue, run unlimited trend research, and let your AI agent post for you over MCP.
