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Caption Limit Scanner
One caption, six platform limits. Paste once, see where it fits and where it gets amputated.
//INPUT
//OUTPUT
Fill the panel and hit run. Everything computes in your browser — nothing is uploaded, nothing is stored.
Limits that actually bite
X cuts at 280 characters, YouTube titles at 100 (and search results truncate around 60–70), Instagram captions at 2,200 with only ~125 characters shown before "more". Writing for the fold matters more than writing to the limit.
Cross-posting workflow
Draft once at X length (280) for the hook, then expand for Instagram/TikTok. A caption that survives the harshest limit is usually the tightest version anyway.