Convert, normalize, mux, and burn SRT, VTT, ASS, and TTML subtitles.
About this tool
Fix and convert subtitles in one place. Convert, normalize, mux, and burn SRT, VTT, ASS, and TTML subtitles into MP4, MKV, and WebM — with timing and encoding fixes that just work, all in the browser.
What it does
- Convert between SRT, VTT, ASS, and TTML
- Normalize timing and fix encoding issues
- Mux subtitles into MP4, MKV, and WebM
- Burn-in subtitles for hardcoded captions
- In-browser processing
Repository
chayprabs/subtitle-converter-online
Source code, issues, and releases
Spotted a bug or have an idea?
This tool is built in the open and shaped by feedback. If something feels off — or you want a feature — I read every message.
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