Subtitle Format ConverterAI-assisted
Shorten long captions · Protect words and phrases · English and Chinese
SRT / VTT / ASS / SSA / TXT · Drag and drop files here
Captions too long? Add natural line breaks.
Paste text or upload subtitles, set a character limit, then review and download the results for your video editor.
- Try it for free. Upgrade when you need more.
- Smart line breaks for English and Chinese
- Protect complete words and custom phrases
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Split long subtitles
Split long lines while protecting complete words and custom phrases.
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Process captions in your browser
No desktop software to install. Your captions are processed on the server.
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Batch processing
Upload multiple files and download the results together.
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AI-assisted line breaks
Add line breaks at word and phrase boundaries. No automatic corrections or rewriting.
Convert subtitles to the format your editor needs
Upload an SRT, VTT, ASS or SSA file, select Start, then choose SRT, VTT or ASS as the output format. Preview and download the converted subtitles.
Conversion keeps visible text and timing. Styling, positioning and effects are not retained. ASS output uses a default style and hundredth-second timing precision.