Free tool · ASS → VTT

Convert ASS
to VTT

Drop an Advanced SubStation Alpha (.ass) file in and get a clean WebVTT for HTML5 video. Override codes are dropped; line breaks and timing are preserved.

Input · ASS

Output · VTT

Everything runs in your browser — no upload, no signup.

Need to generate the captions in the first place?

Drop a video into the editor — 5 free minutes, no card needed.

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Frequently asked

Why convert ASS to VTT?+

Browsers can't render .ass natively. WebVTT is the standard format for HTML5 <track>, so converting is the only way to ship Aegisub-style subtitles on a website without burning them into the video.

Will it preserve positioning (\an8 etc.)?+

No. Override tags are stripped. WebVTT supports its own positioning syntax, but mapping ASS positions to VTT cue settings is lossy and not handled here.

Learn more

ASS format

A heavily-styled subtitle format used by Aegisub and the anime fansub community. Supports per-cue fonts, colors, positioning, and karaoke timing.

WebVTT format

The W3C web standard for subtitles. Used by HTML5 <track> elements. Like SRT but with dot-separated milliseconds and styling support.

Guide

Choosing between ASS, VTT and other subtitle formats

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