Shift subtitle timestamps forward or back
Fix out-of-sync subtitles in seconds — enter an offset, drop your SRT or VTT file, and download the corrected file.
Positive = shift forward · Negative = shift back
Drop your .srt or .vtt file here
or click to browse
Runs entirely in your browser — your file is never uploaded to any server.
How it works
1
Enter the offset
Type the number of seconds to shift — positive to move forward, negative to move back.
2
Drop your file
Drag and drop your .srt or .vtt subtitle file. The shift is applied instantly in your browser.
3
Download the result
Click the download button to save the corrected subtitle file.
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