SRT to VTT Converter

Web browsers only show subtitles in WebVTT format: the HTML5 <video> element's <track> tag does not read SubRip (.srt) files. This converter rewrites SRT subtitles as valid WebVTT — the WEBVTT header, full stops instead of commas before the milliseconds, escaped special characters — and copes with the messy files found in the wild: byte-order marks, Windows line endings, missing hours or blank lines, and Korean files saved in EUC-KR. Paste the text or convert many files at once; everything happens in your browser.

How to use this tool

1. Choose one or more .srt files, or paste the subtitles into the box.
2. Decide whether to keep italics/bold/underline and the cue numbers.
3. Copy the converted text, or download the .vtt files (several come as one ZIP).
4. Use the file in a <track kind="subtitles" src="…vtt"> element, or upload it to a video platform.

Formula

SRT 00:01:02,500 → VTT 00:01:02.500; text: & → &amp;, < → &lt;; {\an8} → line:0

WebVTT requires a full stop before the milliseconds and allows only a few formatting tags, so <i>, <b> and <u> are kept and <font> tags are removed (colours belong in CSS). Times are normalised to hh:mm:ss.mmm, adding missing hours and padding short milliseconds ("1.5" → 1.500). ASS-style position codes such as {\an8} (top centre) become the cue settings line:0, align:start or align:end.

Example

The SRT cue "2 / 00:00:03,500 --> 00:00:05,250 / {\an8}Fish & chips" becomes "00:00:03.500 --> 00:00:05.250 line:0 / Fish &amp; chips" in the VTT file: the comma times turn into full stops, the position code becomes a cue setting, and the ampersand is escaped.