What is the WebVTT format?

WebVTT is the W3C standard format for web video subtitles, designed for HTML5 video elements, supporting styling and position control.

What's the difference between VTT and SRT?

VTT is the web standard supporting CSS styling. SRT is traditional with wider compatibility. VTT starts with WEBVTT and uses dots for milliseconds.

How do I adjust subtitle timing?

Enter offset seconds (negative for earlier, positive for later) and click Adjust Timeline. Scale factor adjusts speed.

Is my subtitle file safe?

Yes, all processing is local in your browser. Files are never uploaded to any server.

What styles does VTT support?

Supports color, background-color, font-size, alignment, position/line and other CSS properties.

🎬 VTT Subtitle Editor

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🔒 Client-side — Your data never leaves your browser ✅ 100% Free — No signup, no limits ⚡ Instant — No server processing

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❓ Frequently Asked Questions

Do I need to install any software?

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.

Can I use VTT Subtitle Editor on my phone?

Yes. VTT Subtitle Editor is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.

Is my data safe when using VTT Subtitle Editor?

Absolutely. Everything runs locally: Time offset and Scale factor are processed on your device, never sent to a server. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.

Is VTT Subtitle Editor free to use?

Yes, VTT Subtitle Editor is completely free to use. No registration or login required — all features are available immediately.

Does VTT Subtitle Editor upload my data to a server?

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.

Are there any usage limits for VTT Subtitle Editor?

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.

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