SRT Subtitle Time Shifter
Move every start and end time in an SRT subtitle file forward or backward. Preview the new timing and save a new SRT file in your browser.
1. Add subtitles
UTF-8 SRT file or text · Up to 2 MiB and 10,000 cues
2. Set the time shift
For example, a delay of 1.5 seconds makes every subtitle start and end 1.5 seconds later.
How to fix the timing of SRT subtitles
- Choose a UTF-8 .srt file or paste your SRT text.
- Select Delay if subtitles appear too soon, or Advance if they appear too late. Enter the difference in seconds.
- Apply the shift, compare the first five cues, and download the new SRT file.
Frequently asked questions
Are my subtitles uploaded?
File reading, time calculations, preview, and download all happen in this browser. Your subtitles stay on your device.
Why can't I move my subtitles any earlier?
The earliest cue cannot start before zero. Reduce the shift to the maximum shown in the error message or less.
What if subtitles drift further out of sync as the video plays?
This tool applies the same time shift to every cue. A growing timing difference requires a separate adjustment for playback speed or frame rate.