PRIVACY & LIMITATIONS

Captions stay on-device. Delivery rules stay with you.

Selected or pasted WebVTT—including cue text, timestamps, settings, and audit results—is parsed on the current page by default. VTTAudit does not upload captions or open or request associated video.

Syntax preflight, not playback approval

The tool checks the WEBVTT header, strict timestamps, reversed intervals, empty cues, duplicate IDs, and vertical/line/position/size/align setting names, then counts overlaps between adjacent cues. It does not render CSS, bidirectional text, or media sync; check reading speed, platform style guides, or audio description; or prove player compatibility. Caption overlaps can be valid, while chapter tracks generally should not overlap—the track's purpose determines the decision.

Dialogue can still be sensitive

Process only captions you are authorized to view, preferably on a trusted device. File selection begins only after your click; refreshing or closing discards source text and results. The report studio and checkpoints read the visible summary rather than input controls, but that summary may contain cue text—review it before copying, downloading, printing, or sharing.

Advertising and local preferences

This page uses Google AdSense Auto Ads. Google may use cookies or similar technologies under its policies. .miluland.com domain cookies sync language, theme, high contrast, a six-item recent-tools list, and up to 16 favorite tool IDs across MiluLand sites. These values never contain inputs, files, or results; the current site also keeps a local compatibility copy.

Local report studio

The report studio reads only the workbench’s currently visible result summary for local preview, Markdown copy, JSON download, printing, and a SHA-256 fingerprint. It never reads input controls or original files and is not persisted unless you choose to download it.

Optional local checkpoints

Only when you explicitly choose Save does the tool write the visible result summary, time, and optional short label to this site’s browser storage, up to five entries. Imported files and input-control contents are never stored; you can export, restore same-tool checkpoints, or clear them at any time. Imports are limited to 128KB and validate the tool, timestamp, summary, and label of up to 80 characters.