Convert, edit and check subtitle files right in your browser.
Switch formats with SRT to VTT or VTT to SRT, or fix timing and typos in the Subtitle Editor.
Your subtitle files are read on your own device and never uploaded.
See every cue on a timeline and check the timing before you publish.
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Subtitle files store timed text that shows over a video. SRT (SubRip) is the simplest and most widely supported: numbered cues with timestamps and plain text.
WebVTT was made for HTML5 video and adds styling, positioning and metadata. ASS/SSA is the most powerful, popular for anime fansubs, with rich styles, animation and karaoke effects.
Files are processed in your browser
No upload and no server queue
SRT, VTT, ASS/SSA and more
Free, with no limits
| Feature | SRT | VTT (WebVTT) | ASS/SSA |
|---|---|---|---|
| File extension | .srt | .vtt | .ass / .ssa |
| Styling | Basic HTML tags | CSS-based | Rich style definitions |
| Positioning | None | Cue settings | Exact x,y positions |
| Karaoke and animation | No | No | Yes |
| Web browser support | Via JavaScript | Native (HTML5) | Via JavaScript libraries |
| Best for | Universal compatibility | Web video players | Anime and complex subs |
Inspect each format with the SRT Viewer, VTT Viewer or ASS/SSA Viewer.
Download 50+ free test files in 10 formats - SRT, VTT, ASS, SSA, SBV, SUB, LRC, SMI, TTML and STL - from the subtitle samples page.
For web video and HTML5 players, use WebVTT (.vtt) - browsers support it natively. For the widest compatibility with TVs and media players, use SRT (.srt). For styled anime subtitles with effects, use ASS (.ass).
Drop your .srt file into SRT to VTT. It fixes the timestamp format, adds the required WEBVTT header and downloads the new file instantly.
Yes. VTT to SRT strips WebVTT-only features such as cue settings and notes, and outputs clean SubRip that works in every player.
The Subtitle Converter handles all the major caption formats in one place, including ASS, SSA, SBV and TTML.
Open the file in the Subtitle Editor. Shift all cues at once when the whole track is early or late, or edit single lines and timestamps.
Yes. Open the file in the ASS/SSA Viewer and use the SRT export. Styling, positions and effects are dropped, and the timing and text are kept.
No. All processing happens in your browser. Files are read and parsed locally, so your subtitles stay completely private.
There is no server limit. Typical movie subtitles load almost instantly, and very large files of 10 MB or more just take a moment on slower devices.