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Timing Shifter
Subtitle Timing Shifter
Shift subtitle timestamps forward or backward to sync perfectly. Fast, easy, and 100% client-side.
Video Preview
Upload a video to preview sync
The video stays local in your browser.
Supports MP4, MKV, WebM and more
Subtitle Preview
Upload subtitle to preview| # | Original Time | Shifted Time | Subtitle |
|---|---|---|---|
| Upload a subtitle file to see live timing changes here. | |||
No changes yet
Upload a subtitle file to preview live changes.
Shift Forward or Backward
Move subtitles earlier or later by any amount.
Instant Preview
See changes in real-time before downloading.
100% Client-Side
Your files never leave your device.
Need Help?
Common timing issues:
Subtitles appear too early
Use a negative shift (e.g., -500ms)
Subtitles appear too late
Use a positive shift (e.g., +500ms)
Still not synced?
Try smaller adjustments (100-200ms)
What is this?
The Timing Shifter adjusts all subtitle timestamps by the same amount to help you sync them perfectly with your video.
SRTASSVTTSBVSUBand more
Translate this subtitle100% client-sideYour files stay on your device