Why do I need VTT instead of SRT for web video?

HTML5 video players only accept WebVTT subtitle files via the track element. SRT files are not supported by browsers, so converting to VTT is required to show captions on a web page.

What is the difference between SRT and VTT?

They are very similar: VTT adds a WEBVTT header and uses periods instead of commas in timestamps. AllConvert handles both changes automatically and preserves all your subtitle text and timing.

Will my subtitle timing change during conversion?

No. Every cue keeps its exact start and end time — only the timestamp format changes from comma to period notation.

Convert SRT to VTT Online Free

Need subtitles for an HTML5 video player? AllConvert converts SRT files to WebVTT instantly, right in your browser. No upload, no account, no software to install.

Try It Now — Convert SRT to VTT

Why convert SRT to VTT?

SRT is the most common subtitle format for downloaded video files, but web browsers don't support it. The HTML5 <track> element — used by every web video player, including Video.js, Plyr and the native browser player — requires WebVTT (.vtt). Converting SRT to VTT is the one step between having subtitles and actually showing them on a web page.

What changes in the conversion?

The two formats are close cousins. AllConvert adds the required WEBVTT header, converts the timestamp separators from commas to periods (00:01:23,456 becomes 00:01:23.456), and keeps all your cue text and timing exactly as it was. Subtitle numbering and line breaks are preserved.

Using the result

Reference the converted file in your video markup with <track src='subtitles.vtt' kind='captions'> and captions appear in the player. Need to go the other way for a desktop player? AllConvert also converts VTT back to SRT, or extracts just the dialogue as plain text.

How to convert

Open AllConvert and drop your SRT file onto the page.
Select VTT from the format dropdown on the file card.
Click Convert and download your result.

The entire process runs locally in your browser. Nothing is uploaded, and it works on desktop and mobile, in Chrome, Firefox, Safari, and Edge.

Convert SRT to VTT Now