| SRT | VTT | |
|---|---|---|
| Compression | Lossless | Lossless |
| Metadata | - | - |
| Open / royalty-free | ✓ | ✓ |
| Defined by | - | W3C |
| Since | - | - |
| Best for | subtitles for any video player | video on websites |
SRT
The simplest subtitle format. Every player reads it.
VTT
The web's subtitle format, required by HTML5 video.
Questions
SRT or VTT: which is smaller?
It depends on the content; see our measured benchmarks on the conversion pages.
Can I convert SRT to VTT?
Yes, in your browser, nothing uploaded.
And VTT to SRT?
Yes, as well.