Catch the small things
Timing. Readability. Formatting.
PRIVATE BY DESIGN. READY FOR YOUR FINAL PASS.
Better subtitles.
Before you hit play.
Check, tidy and compare. All on your device.
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?
A careful final check for SRT and WebVTT subtitles
Inspect subtitle overlaps, short gaps, reading speed, line lengths and malformed timecodes. Open a local video for context, review captions individually, and download a corrected file and quality report. Findings are technical review prompts, not a guarantee of delivery compliance.