Choose the subtitle file that belongs to your video.
Local subtitle time shifter
Fix subtitle sync without touching the words.
Shift every SRT or WebVTT cue forward or backward, preview the result, and download the same format.
* Your subtitle file stays in this browser. No upload or account.
Local subtitle time shifter
A small fix for a frustrating mismatch
Use positive seconds to delay captions and negative seconds to move them earlier.
Preview the first result, then test the downloaded file in your player.
FAQ
What does CueShift preserve?
Does CueShift upload my file?
No. The file is read and processed in this browser tab.
Which formats are supported?
CueShift accepts standard SRT and WebVTT files and keeps the original subtitle text and format.
What happens before zero?
Timestamps are clamped to zero so the output remains usable; review the preview when shifting backward.