Catch the small things
Timing. Readability. Formatting.
PRIVATE BY DESIGN. READY FOR YOUR FINAL PASS.
Same words.
A different format.
Convert subtitle formats privately in your browser, with clear warnings about WebVTT styling and positioning losses.
1 Open a track→2 Review the details→3 Download
Drop your subtitle file here
SRT / WebVTT · up to 2 MB
or
On your device. No uploads. No sign-up.
Keep languages in sync
Two tracks. One timeline.
You're always in control
Preview changes. Undo anytime.
What does CaptionCheck check?
Convert SRT to WebVTT and WebVTT to SRT
Import SRT or WebVTT and choose an output from Export. Text and timestamps are kept. WebVTT-to-SRT conversion loses positioning, cue identifiers, style blocks and region information and requires acknowledgement. UTF-8 text files are supported; image-based or embedded subtitles are not.