Fix subtitles that are early or late
Use this tool when the text is correct but every caption appears a little too soon or too late. Paste or upload an SRT file, enter a positive or negative offset in seconds, and generate a normalized file.
This is best for global drift at the start of a file. If the subtitles slowly drift more over time, split the file into ranges or use a timeline editor for segment-specific repair.
Choose the right offset
A value such as 1.25 moves every cue 1.25 seconds later. A value such as -0.4 moves every cue 0.4 seconds earlier. Times that would become negative are clamped to 00:00:00.
For best results, find one visible spoken phrase, compare the subtitle start with the actual audio, and use that difference as the offset. Run a small correction first, then preview the middle and end of the video before replacing the original file.
Use it for clean global resync work
SRT time shifting is useful after a video intro is trimmed, an export starts with a different slate, or a translated subtitle file was copied from another version of the same video. The converter keeps cue order and text intact while only changing the timing.
Batch mode is helpful when a whole folder of captions needs the same correction. Each file is processed in the browser and downloaded together, so you can repair repeated export offsets without uploading subtitle content to a server.
Review the shifted file before publishing
A global offset cannot fix every timing problem. If some captions line up and others do not, the source subtitle probably has variable drift, missing cues, or edits that changed the video duration between scenes.
After shifting, scan the beginning, middle, and final minute of the video. Keep a copy of the original SRT, then publish the adjusted file only after dialogue, music cues, and on-screen text still appear at the right moments.