Subtitle converter
Convert subtitle files between SRT and WebVTT and shift all timings.
🔒 Everything runs in your browser. Nothing you choose or type is uploaded. How to verify
Drop files here or tap to choose
How to use it
- Paste the subtitle text.
- Choose the output format.
- Optionally shift timing, then select Run.
Handy for
Preparing captions for web video players and editors.
Good to know
Use 1000 milliseconds for one second. VTT output starts with the required WEBVTT header.
Privacy: where the work happens
Everything you enter or choose is processed by JavaScript in your browser and never sent anywhere. Only the page code, and any library this tool needs, is downloaded from cdnjs or jsDelivr.
Questions
How do I make subtitles appear earlier?
Enter a negative number of milliseconds, such as -500.
Does it keep styling?
No. Cue text is kept, but VTT styling and positions are dropped.