Online Tool Store
Subtitle Shifter
Prepare subtitle timing shifts with file selection, offset amount, range selection, and output format controls in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Subtitle utility
Shift subtitle timing
Frontend preview — no upload or external service.
Timing preview
Upload a subtitle file and define the timing offset to prepare an adjusted subtitle preview.
How Subtitle Shifter works
Choose a subtitle file, enter a positive or negative offset, and decide whether to shift all captions or a selected time range.
FAQ
Does it edit subtitle files yet?
No. The current implementation provides the frontend controls only.
Are subtitle files uploaded?
No. The UI does not send selected files to a backend.