CAPTIONCHECK · PROFESSIONAL BROWSER TOOL
Give your captions a closer look.
Keep SRT or WebVTT in your browser while checking overlaps, duration, line count, and reading speed—then retime and export.
01 · WORKBENCH
Inputs and files stay on this device
Processed locally
/Focus first input⌘ ↵Run primary action⌘ ⇧ SDownload local reportAlt RJump to latest resultsAlt LSwitch languageAlt TSwitch themeAlt CToggle high contrast
Local report studioPreview · Markdown · JSON · SHA-256
SHA-256
—Uses only the currently visible result summary, never input controls or original files; the fingerprint is also calculated locally.
Local analysis checkpointsUp to 5 · saved only when you choose
Stores only the visible result summary, time, and an optional short label; imported files and input controls are never stored. Imports must match this tool and stay under 128KB; comparison also stays on this device.
02 · CAPABILITIES
Built deeply for one narrow workflow
Configurable QA rules
Retime and issue CSV
Default checks are informed by Netflix's current public timed-text guidance, but this is not a Netflix-certified tool. Client and platform rules may differ.
Read the source ↗NO ACCOUNT · LOCAL PROCESSING · EXPORTABLE