Upload a subtitle file and shift all timestamps forward or backward by milliseconds or seconds to fix synchronization issues.
Your subtitles are shifted locally in your browser. No upload required.
Use positive numbers to delay (e.g. 1500 for 1.5s later) or negative to advance (-500 for 0.5s earlier).
Upload your video and automatically generate SRT, VTT, or hardcoded subtitles.
Subtitles can become out of sync if the video frame rate differs from the subtitle file, or if the video was cut or edited after the subtitles were created. A simple time shift is usually all you need to fix a constant offset.
Select and load your SubRip (.srt) or WebVTT (.vtt) file.
Enter the sync offset in milliseconds or seconds (positive to delay, negative to speed up).
Click 'Shift Subtitles' to apply changes and download the synchronized file.
It is the process of delaying or advancing all subtitle timestamps to sync with video audio.
Enter a negative offset value (e.g. -1.5 seconds) to make the subtitles appear earlier.
Yes, it supports SubRip (.srt) and WebVTT (.vtt) files, adapting millisecond formats automatically.
Yes. The shifting runs entirely inside your browser. No files are uploaded to our servers.
This subtitle time shifter processes your SRT and VTT files entirely locally within your web browser. Your files are never uploaded to our servers, ensuring your data remains completely private and secure.