User-threshold audit only—not a broadcaster, platform, language, accessibility, or legal compliance determination. Reading-speed needs vary by audience and context; review captions manually.

Caption fileFormatMax chars / second (0 disables)Max words / minute (0 disables)Minimum duration secondsMaximum duration secondsMaximum line graphemesMaximum linesMinimum gap secondsAllowed overlap secondsFilterSort Preview explicit timing adjustment

Caption source

Preview rule (only when enabled): extend each valid cue to meet entered minimum duration and enabled max CPS, but never past the next cue start minus the entered minimum gap. Source text is never overwritten.

Cue timeline and measurements

Caption cue timing, speed, and warnings
ID / text	Start → end	Duration	Graphemes / words	CPS / WPM	Lines / max line	Gap	Warnings	Preview end	Timeline

Caption Reading Speed Auditor

Cue timeline and measurements

Parser and method notes