Free Tools
Free subtitle tools that run in your browser
Convert formats, fix sync, check line length, and build YouTube chapters — privately on your device. Open any tool below, then burn styled captions into video when you are ready to post.
SRT ↔ VTT converter
Convert SRT to VTT or VTT to SRT free in your browser. No upload, no signup
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Subtitle time shifter
Shift SRT or VTT timestamps forward or back in your browser. Fix out-of-sync subtitles free — no upload.
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Caption character counter
Paste or upload subtitles to count characters, lines, and cues. Flag long lines (42-char guide) and reading speed when timing exists — free in your browser.
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YouTube timestamp generator
Turn your own transcript or outline into YouTube chapter timestamps. Validates 0:00, spacing and count — free, no URL scraping.
Open tool →SRT to TXT
Turn SRT/VTT subtitles into a plain text transcript without uploading the file.
Open tool →CPS calculator
Check caption reading speed and average characters per line before you export.
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