PRE-FLIGHT YOUR CAPTIONS

Catch subtitle issues
before the upload.

Check timing, readability and bilingual cue alignment in one private, local report. No account. No file upload.

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SUBTITLE TRACK

Choose a file

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↑Drop SRT or WebVTT hereor browse files · .srt, .vtt · processed locally

Max reading speed chars/sMax line length chars

OPTIONAL

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＋Add second trackFlags missing cues and timing drift over 500 ms

Everything runs in this tab. CaptionLint never sends files over the network.

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READY WHEN YOU ARE

Add a subtitle file to see cue-level findings, readability checks and an exportable Markdown report.

SRT supportedVTT supported0 uploads

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Detect malformed timestamps, reversed cues, overlaps and unusually short or long display times.

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Flag high character-per-second rates, long lines, too many lines and likely encoding damage.

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Compare cue counts and time drift between source and translated tracks without merging their text.