Convert VTT to ASS subtitles
Convert your subtitles in seconds — entirely on your machine. Nothing is uploaded: the file never leaves your device. CueForge preserves styling and positioning wherever ASS can express it, and shows you the exact loss matrix below before you commit.
What gets kept, what gets dropped
| Feature | VTT → ASS |
|---|---|
| Italics | Kept |
| Bold | Kept |
| Underline | Kept |
| Font colour | Kept |
| Positioning | Kept |
| Voice / speaker tags | Dropped |
ASS can additionally express Styling override tags, which you can add in the studio after converting.
About VTT
WebVTT (.vtt) is the W3C captioning format for the HTML5 <track> element and web video. It builds on SubRip with cue settings for on-screen positioning, voice/speaker tags and CSS-class styling, and its timecodes use a period before the milliseconds (00:00:00.000), where SRT uses a comma.
About ASS
Advanced SubStation Alpha (.ass, evolved from SubStation Alpha .ssa) is the styling-rich format favoured by fansubbing and anime. It defines named styles plus inline override tags for fonts, colours, bold/italic/underline and precise on-screen positioning, making it far more expressive than SRT.
Frequently asked questions
Is converting VTT to ASS free?
Yes. Converting VTT to ASS runs entirely on the free tier — no account, no payment, and no file-size or watermark limits.
Do I have to upload my file?
No — everything is converted in your browser; your file never leaves your device.
Will my formatting be preserved converting VTT to ASS?
Italics, Bold, Underline, Font colour and Positioning carry across into ASS. Voice / speaker tags cannot be expressed in ASS and is dropped (CueForge shows you exactly what is lost before you convert). ASS can additionally express Styling override tags, which you can add after converting.
What is the difference between VTT and ASS?
WebVTT (.vtt) is the W3C captioning format for the HTML5 <track> element and web video. It builds on SubRip with cue settings for on-screen positioning, voice/speaker tags and CSS-class styling, and its timecodes use a period before the milliseconds (00:00:00.000), where SRT uses a comma. Advanced SubStation Alpha (.ass, evolved from SubStation Alpha .ssa) is the styling-rich format favoured by fansubbing and anime. It defines named styles plus inline override tags for fonts, colours, bold/italic/underline and precise on-screen positioning, making it far more expressive than SRT.
Need the other direction? Convert ASS to VTT →