Subtitle Validate Tools

Check SRT and WebVTT subtitles against quality-control rules.

ESC

Subtitle Quality Checker

Validate SRT and WebVTT subtitles against selectable QC profiles or custom thresholds for reading speed, line length, line count, cue duration, gaps, overlaps, ordering, numbering, empty cues, malformed timestamps, malformed tags, whitespace, and spelling, with every issue shown by cue, timestamp, rule, and severity, plus a suggested non-destructive fix.