SRT to VTT Converter
/srt-to-vttConvert SRT subtitle files to VTT (WebVTT) format for HTML5 video, YouTube, and web players.
HTML5 video players and YouTube accept WebVTT, but most subtitle files in circulation are SRT. This converter translates SRT subtitles to VTT, adjusting timestamps to the dot-millisecond format VTT requires. Cue formatting survives the conversion intact, and the WEBVTT header is added automatically. Like every tool here, the file is processed locally so nothing is uploaded.
Self-hosted course platforms and media sites that render subtitles through the HTML5 <track> element quickly discover that browsers silently ignore SRT files. Only WebVTT is accepted, and a caption file that fails to load means no captions at all for your audience. Converting your library of SRT subtitle files to VTT before publishing keeps the <track> reference valid, preserves per-cue timing, and lets you ship accessible video without re-authoring a single subtitle by hand. Everything runs locally, so your video assets never touch an upload endpoint.
Accessibility reviewers and caption editors often deliver SRT because it is the format every player imports, yet the target property, whether an internal LMS, a digital signage player, or a video kiosk, consumes only WebVTT. The mismatch surfaces during compliance checks. Converting to VTT up front gives you dot-millisecond precision, which matters when captions must align to spoken syllables, and the WEBVTT header and cue formatting arrive intact. Keep the original SRT as your working copy and use the converted file for distribution.
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Your subtitle file is converted entirely in your browser — it never leaves your device.
FAQ
Frequently asked questions
Everything you need to know about srt to vtt converter.
Why should I convert SRT to VTT?
WebVTT is the native subtitle format for HTML5 video elements and is accepted by YouTube, Vimeo, and most web players, while many of them reject plain SRT files.
Do the timings stay the same?
Yes. Cue timing, text, and order are preserved exactly; only the timestamp separator changes from a comma to a dot, and a WEBVTT header is added at the top.
Can I paste subtitles instead of uploading?
Yes. The tool accepts both file uploads and pasted SRT content, and validates the input before converting, showing a clear error if no cues are found.
Is there a file size limit?
The subtitle engine supports inputs up to 20 MB, which is far beyond typical subtitle files, so even full movie subtitle tracks convert instantly.
Why do I get 'No subtitle cues found'?
That validation error appears when the input contains no timing lines with the --> arrow. Check that you pasted the SRT body and not surrounding text from an editor.
Is my subtitle file private?
Yes. Conversion runs 100% in your browser — the file never leaves your device, so it is safe to convert unreleased or confidential subtitles.
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