SRT subtitle time offset tool
Shift existing SRT subtitle timestamps forward or backward locally and download a corrected subtitle file.
Paste or choose an SRT file and enter a signed offset in seconds. Download adjusted cues and inspect dropped or clamped counts.
Your result
Move every cue by the same offset
Use a positive offset when subtitles appear too early and need to display later. Use a negative value when they appear too late. A cue from 00:00:01,000 to 00:00:02,000 shifted by +0.125 becomes 00:00:01,125 to 00:00:02,125. The tool preserves subtitle text and line breaks, then renumbers remaining cues.
Check the beginning and end
Cues ending at or before zero are removed; a cue crossing zero gets a zero start. These changes are counted in the result. Check several points in your player before replacing a file, and keep the original. Only numbered SRT cues with comma milliseconds are accepted; timing extensions, encoding conversion, drift correction and subtitle translation are outside this tool. File contents remain local.