Convert VTT files to ASS online, free and without signup. Upload your VTT file below and download the converted ASS in seconds. You get 10 free conversions every day, and files are automatically deleted after 24 hours.
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VTT is the web subtitle format used by HTML5 video captions.
ASS is an advanced subtitle format supporting styling and positioning.
Upload your VTT file using the button above. Files up to your plan limit are supported.
Click Convert. Your file is processed on our servers with industry-standard engines like FFmpeg and LibreOffice.
Download your ASS file. It stays available for 24 hours, then it is deleted automatically.
Yes. ConvertFly offers 10 free conversions every day with no signup required. For higher volumes, credit packages start at $8.
Yes. Files are encrypted during transfer and automatically deleted after 24 hours. ConvertFly is operated by Dizzus GmbH in Switzerland.
No. The conversion runs entirely in the cloud: it works from any browser, on desktop or mobile.
| VTT | ASS | |
|---|---|---|
| Type | subtitle | subtitle |
| In short | VTT is the web subtitle format used by HTML5 video captions. | ASS is an advanced subtitle format supporting styling and positioning. |
Convert VTT to ASS online for free. Fast, secure subtitle conversion powered by industry-standard engines. No signup required, files auto-delete after 24 hours. Operated by Dizzus GmbH on private infrastructure.