Create and edit WebVTT subtitle files online - Client-side processing, no upload
Drag & drop VTT file here, or click to select
Supports .vtt format
WebVTT (Web Video Text Tracks) is the W3C standard format for web video subtitles, designed for HTML5 <video> elements. It supports styling (font color, position, alignment) and is the preferred format for modern web video subtitles.
VTT is the web standard supporting CSS styling, position control, and vertical text. SRT is a traditional format with wider compatibility but simpler features. VTT files start with "WEBVTT" and use dots for milliseconds; SRT uses commas. This tool supports VTT editing and SRT export.
Enter the offset in seconds (negative to shift earlier, positive to shift later) and click "Adjust Timeline". Scale factor adjusts speed (1.0 = original, >1 faster, <1 slower).
Completely safe. All editing is done locally in your browser. Your files are never uploaded to any server. Data is cleared when you close the page.
WebVTT supports color, background-color, font-size, alignment, position/line, and other CSS properties. This tool edits plain text content; styles can be added manually after export.
No. VTT Subtitle Editor is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.
Yes. VTT Subtitle Editor is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.
Yes, VTT Subtitle Editor is completely free to use. No registration or login required — all features are available immediately.
No. VTT Subtitle Editor uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.
VTT Subtitle Editor has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.