Skip to main content
FileWhirl
Sign up
SRT → VTT

Convert SRT subtitles to WebVTT.

Turn .srt captions into web-ready .vtt for HTML5 video. Converts in your browser in milliseconds, no upload, no desktop app needed.

Open in TranscriptAIOr use the universal converter
Converts in your browserNo signupNever uploadedFree

Why WebVTT for web video

SRT is the most common subtitle format, but browsers won't load it into an HTML5 <video>. The web standard for captions is WebVTT (.vtt). It's what the <track> element expects. The two are very close (timed lines of text), so the conversion is quick and faithful; the differences are that VTT starts with a WEBVTT header, uses a dot for the millisecond separator (00:00:01.500 instead of SRT's comma), and can carry optional positioning and styling cues.

Adding captions to a video

Once you have the .vtt, point a <track> at it inside your video:

<video controls>
  <source src="clip.mp4" type="video/mp4">
  <track kind="captions" src="captions.vtt" srclang="en" label="English" default>
</video>

Private by design

Because subtitles are just text, this conversion runs entirely in your browser. The file never uploads. Only have audio or video so far? Audio to text can generate the captions first.

How it works

  1. 01

    Choose your SRT

    Drop a file or pick one from your device. Private by default.

  2. 02

    Convert with a local engine

    SRT becomes VTT using a best-in-class open engine, no paid API in the loop.

  3. 03

    Download or hand off

    Grab your VTT, or open it in TranscriptAI to do more.

Best available engine, honest about limits

Converts in your browser, never uploaded

No watermark, no signup to try

Handles large files

Transcript-ready output

Direct handoff to TranscriptAI

Next step

Your file is ready. Want to do more with it?

Open this file in TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items: automatically.

TranscriptSummaryNotesFlashcardsQuizAction items
Open in TranscriptAI

Common questions

Is it free?+

Yes. Convert SRT to VTT free. No signup, no watermark, no daily cap.

Is my file private?+

It runs entirely in your browser. Your file never leaves your device or touches our servers.

Will quality hold up?+

We use the strongest open engine for this route. High-bitrate, faithful output.

Related conversions

Universal converterAudio to textPricing