PRIVACY & LIMITATIONS

Dialogue stays in your browser. You keep control of the timeline.

SRT/WebVTT text you paste or explicitly choose, QA thresholds, and retimed results stay on the current page by default. CaptionCheck does not upload captions, open associated video, or read your system clipboard or captioning software.

Editing aid, not platform approval

The tool recognizes common SRT/WebVTT timing lines, flags configurable minimum/maximum duration, line count, characters per second, and adjacent overlap, and can apply one millisecond offset to every cue; negative results are clamped to 00:00:00,000. It does not play video or validate picture-safe areas, speakers, semantic line breaks, bidirectional text, styles, frame rate, or audiovisual sync, and it is not Netflix or client certification.

Caption text and exports can be sensitive

Process only captions you are authorized to view, preferably on a trusted device. The page does not persist caption content; refreshing or closing discards the current text and results. SRT/VTT downloads contain the complete dialogue, while the issue CSV includes cue numbers, times, rules, and values. Browser extensions, screen sharing, and the downloads folder may still expose these files, so review them before 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.