Subtitle Viewers
Subtitle Converters
Subtitle Format Comparison
| Feature | SRT | VTT (WebVTT) | ASS/SSA |
|---|---|---|---|
| File extension | .srt | .vtt | .ass / .ssa |
| Styling support | Basic HTML tags | CSS-based styling | Rich style definitions |
| Positioning | None | Cue settings | Precise x,y positioning |
| Karaoke effects | No | No | Yes |
| Animation | No | No | Yes (fade, move, rotate) |
| Web browser support | Via JavaScript | Native (HTML5) | Via JavaScript libraries |
| Best for | Universal compatibility | Web video players | Anime / complex subs |
| View tool | SRT Viewer | VTT Viewer | ASS Viewer |
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Download 50+ free sample files in 10 formats - SRT, VTT, ASS, SSA, SBV, SUB, LRC, SMI, TTML, and STL.
About Subtitle Formats
Subtitle files store timed text that displays over video content. The three most common formats are SRT (SubRip), WebVTT (Web Video Text Tracks), and ASS/SSA (Advanced SubStation Alpha). SRT is the simplest and most widely supported - it contains numbered entries with timestamps and plain text. WebVTT was designed for HTML5 video and adds CSS styling, positioning, and metadata support. ASS is the most powerful format, used heavily in anime fansubbing, with rich styling, animations, karaoke effects, and precise text positioning. Use our SRT to VTT converter to switch between web and desktop formats, or our viewers to inspect subtitle files before editing them.
100% Private
All files processed in your browser
Instant Processing
No upload or server wait times
Universal Support
SRT, VTT, ASS/SSA formats
No Watermarks
Completely free, no limits
Frequently Asked Questions
For web video (HTML5 players), use WebVTT (.vtt) as it has native browser support. For maximum compatibility across media players, use SRT (.srt). For styled anime subtitles with effects and positioning, use ASS (.ass).
Use our SRT to VTT Converter. Drop your .srt file into the tool and it instantly converts to WebVTT format. The conversion handles timestamp format differences and adds the required WEBVTT header automatically.
Yes! Use our VTT to SRT Converter. It strips WebVTT-specific features (cue settings, notes) and outputs clean SubRip format compatible with all media players.
Yes. Open your ASS file in the ASS/SSA Viewer and click the "Export SRT" button. This strips all ASS-specific styling (colors, positioning, effects) and outputs clean SRT with just timing and text.
No. All processing happens in your browser using JavaScript. Files are read locally, parsed in memory, and displayed on screen without any network requests. Your subtitle content remains completely private.
Since processing is browser-based, there is no strict server-side limit. Most subtitle files are small (under 1MB). Very large files (10MB+) may take a moment to parse depending on your device. For typical movie subtitles (1-5,000 lines), loading is nearly instant.