The right words, at the right time.

Choose or paste existing timed captions, select SRT or VTT and shift their timing if needed. Check the preview, then download the repaired file.

SRT to VTT and back

Convert existing timed caption files between SubRip and WebVTT. This tool exports plain text captions; style, positioning and unsupported metadata are reported as omitted.

Fix a constant timing offset

Move every caption earlier or later by the same number of seconds. A shift that would move captions before zero is rejected.

Check captions against a video

Use the optional local video preview to inspect timing. Browser video-format support varies; caption conversion also works without a video.

Existing captions only

This tool does not transcribe audio, translate captions or invent timestamps for an untimed transcript. Overlapping and out-of-order cues are flagged for your review.