Tools/Transcripts & subtitles

Caption Timing Shifter

Captions running early or late by a fixed amount? Shift every cue by the same offset, forwards or back, and see the first cues change before you export.

Caption page

Drop a caption file on this page

.srt, .vtt or .txt. Click to choose one.

This runs entirely in your browser. The file is never uploaded to a server.

Or write the caption text here

Free · no signup
Paste or upload a file
Runs in your browser

What this does

Load an SRT or VTT file and shift every cue by the same number of seconds. Negative values pull captions earlier, positive values push them later. Times never go below zero.

The first cues are shown before and after, so you can confirm the offset is right before you export. The file is parsed in your browser and never uploaded.

Use cases

01Fix captions that drift because an intro was added or trimmed after they were written.
02Realign a caption file to a re-export where the edit start moved.
03Nudge a subtitle track that reads a beat late on every line.

Glossary

Captions vs subtitles WebVTT Closed captions

FAQ

Questions, answered.

Does it fix captions that drift progressively?

No. This applies one fixed offset to every cue. If the gap grows through the video, the frame rate is the cause, and a single shift will not fix it.

Are my files uploaded?

No. The file is read by your browser with the File API. Nothing reaches our server.

Which formats work?

SRT and VTT. Plain text has no timings to shift, so there is nothing for this tool to move.

From the notebook

How to get a transcript from a YouTube videoThe two-minute version, the three link shapes that trip people up, and what to do when the transcript panel is missing.SRT vs VTT vs TXT: which subtitle format to useWhat each format carries, which players accept it, and the exact styling rules YouTube applies to each file you upload.Free YouTube subtitle extractor: every method that still worksFour ways to pull captions out of a YouTube video, what each one costs you in time, and the six official reasons a video has no track to pull.