VTTAUDIT · PROFESSIONAL BROWSER TOOL
Captions can render while the timeline still fails preflight.
Parse WebVTT headers, cue IDs, strict timestamps, settings, payloads, NOTE, STYLE, and REGION locally; flag empty cues, duplicate IDs, invalid settings, reversed time, and build an overlap ledger.
Open the workbench ↓01 · WORKBENCH
Inputs and files stay on this device
02 · CAPABILITIES
Built deeply for one narrow workflow
Settings, IDs, and payload preflight
Timeline span and overlap ledger
This is a bounded preflight of common W3C WebVTT syntax, not a complete browser parser, CSS renderer, bidirectional-text engine, chapter-track semantic checker, or platform delivery profile. Caption overlaps can be valid depending on use.
Read the source ↗NO ACCOUNT · LOCAL PROCESSING · EXPORTABLE