No. Files are opened entirely in your browser using local JavaScript and WebAssembly. Nothing is sent to a server.

Does it work on mobile?

Yes. The viewer is mobile-first and works on phones, tablets, and desktops.

categories.misc.vtt

WebVTT viewer

ready

WebVTT · .vtt

WebVTT — HTML5 native subtitles.

Choose a fileor paste · ⌘V

About WebVTT

WebVTT — HTML5 native subtitles.

WebVTT extends SRT with styling, regions, and chapters. The browser's own <track> machinery parses it.

FAQ

What is a WebVTT file?: WebVTT extends SRT with styling, regions, and chapters. The browser's own <track> machinery parses it.
Is my file uploaded?: No. Files are opened entirely in your browser using local JavaScript and WebAssembly. Nothing is sent to a server.
Does it work on mobile?: Yes. The viewer is mobile-first and works on phones, tablets, and desktops.

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