Sync subtitles online: shift, stretch, change FPS
Subtitles early, late or drifting? Fix the timing of an SRT, VTT or ASS file and download it — in your browser.
Negative = earlier, positive = later. "-1.5", "+2", "1:05.2" all work.
For subtitles that start right and drift. Give the correct time of the first and last line — everything in between is stretched to match.
Enter a time like 1:02.5 or 00:01:02,500.
Saved as UTF-8, which every player reads — that alone fixes "Привет"-style text.
Runs in your browser. Nothing leaves your device.
Which fix do I need?
Every line is early or late by the same amount: use Shift. Watch for one line, note how far off it is, and enter that — positive if the subtitles should appear later.
The first lines match but the gap grows towards the end: the subtitles were timed for a different cut or frame rate. Use Two-point sync with one line near the start and one near the end, or Frame rate if you know the rates (23.976 and 25 are the usual pair).
The text shows as "Ïðèâåò" or "Привет": the file is in Windows-1251. Loading it here and saving it fixes that, even with a zero shift.