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The W3C standard subtitle format for HTML5 video. VTT files support CSS styling, cue positioning, and chapter markers.
Convert SRT subtitle files to VTT format instantly online
Convert VTT subtitle files to SRT format for universal compatibility
Full-featured online subtitle editor with live preview
Preview subtitle appearance and timing before export
Format subtitles optimized for YouTube upload
Format captions for TikTok videos
Remove duplicate subtitle entries from your files
Clean up empty subtitle lines and gaps
Strip speaker names and labels from subtitles
Remove sound effects and SDH annotations from subtitles
Add or remove delay from subtitle timestamps
Synchronize subtitles with your video timeline
Fix subtitle duration for better readability
Fix overlapping subtitle entries automatically
Add proper gaps between consecutive subtitles
Find and replace text across your entire subtitle file
Merge short subtitle lines into longer, readable blocks
Split long subtitle lines at optimal break points
Validate subtitle file format and structure
Convert subtitle file encoding between formats
Add subtitles to web video using the HTML5 track element with WebVTT format for standards-compliant captioning.
Upload VTT files to YouTube Studio — the platform's recommended format for subtitle uploads.
Create accessible course video captions with CSS-styled WebVTT that matches your learning platform's design.
Add chapter markers to your VTT files for video navigation and structured content browsing.
Submit VTT subtitles to Vimeo, JW Player, and other streaming platforms that require WebVTT format.
WebVTT (Web Video Text Tracks) is the official W3C standard subtitle format for HTML5 video playback in web browsers. Created by the World Wide Web Consortium, VTT is the required format for YouTube, Vimeo, and all major HTML5 video players. Unlike SRT, WebVTT supports CSS styling for text appearance, cue positioning for screen placement, and chapter markers for video navigation. VTT files begin with the mandatory WEBVTT header and use dots (not commas) as millisecond separators in timestamps. The format supports multiple cue settings including vertical text, line position, text alignment, and size. WebVTT is designed for accessibility and works seamlessly with the HTML5 Track element, making it the ideal choice for web-based video content, online courses, and streaming platforms.
Browse our complete collection of subtitle tools for all your captioning needs.