CAPTION TIMING QC

Check subtitle timing. Make the smallest useful correction.

The website calculates CPS and one timestamp. Opening, editing and saving subtitle files are Windows evaluation-app features.

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Free evaluation for Windows

Open SRT/VTT subtitles, shift selected cue timing, check overlaps and gaps, and export JSON/HTML QC reports. It does not transcribe, translate or automatically upload content.

Download Windows evaluation .3

For personal and internal organizational evaluation; this is not a permanent free or open-source license. The Windows app is unsigned: read installation guidance and do not bypass security controls. Test a copy and check exported results in playback.

Try it · Install / remove · Evaluation license · Known limitations

ZIP SHA-256 · 54,440,980 bytes5c4fb34734113c8e4b5d2f2cdae1c78d93d051462d74bc456363e51f8718a5e2

The web calculators are currently free, with no ad, payment or analytics tags. Any future advertising requires updated notices and applicable setup first. Download and use do not require signup or feedback.