Subtitle Time Shifter
Fix subtitles that appear too early or too late. Shift every caption by the same amount and download the corrected file.
Output
Frequently asked questions
My subtitles drift more over time. Will this fix it?
This tool applies the same offset to every caption, which fixes a constant delay. Drift that grows over time usually means a frame-rate mismatch.
Which direction should I shift?
If captions appear before the words are spoken, shift later (positive). If they appear after, shift earlier (negative).
Is my file uploaded?
No. Conversion happens entirely in your browser. Your subtitle file never leaves your device.