subtitletool.

SUBTITLE TOOLS / SRT

SRT to VTT.

Convert SRT to WebVTT with a WEBVTT header and valid timestamps. Paste or choose a file, preview and download. No upload required.

01 Your subtitles

Drop a subtitle file or choose a file.srt · One file · Up to 10 MB / 50,000 cues

Files are processed locally in your browser and are never uploaded to a server.

Settings
Advanced options

Encoding applies to files. Pasted garbled text cannot be decoded again. Output is always UTF-8.

VTT is always UTF-8 without a BOM.

02 Result preview

LOCAL ONLY

Your converted subtitles will appear here.

Choose a file or paste text to begin.

Local processing · No sign-up

FROM INPUT TO DONE

Three simple steps

  1. Choose a file or paste subtitles.
  2. Confirm settings, process and review diagnostics.
  3. Preview, then copy or download. Keep your original file.
00:00:01,000 --> 00:00:03,000
WEBVTT … 00:00:01.000 --> 00:00:03.000

Related tools

VTT to SRT

Convert WebVTT to SRT with numbered cues and comma timestamps. Preview subtitles and see which styles or settings are removed. Processed locally.

Shift subtitle timing

Shift SRT or VTT subtitles earlier or later by seconds or milliseconds. Preview the changes and download. Files stay in your browser.

ASS to SRT

Convert ASS or SSA subtitles to SRT in your browser. Keep dialogue and valid timing while removing styles, effects and drawings. Preview and download.

Frequently asked questions

Can I convert SRT to VTT by renaming the file?

No. VTT also needs a header, different timestamps and correctly escaped cue text.

Is the WEBVTT header added automatically?

Yes. The output includes the WEBVTT header and required blank line.

Why do timestamp commas change to decimal points?

VTT requires decimal points in timestamps. Commas in dialogue are unchanged.

Are multiline text, Chinese characters and basic formatting kept?

Multiline text, Chinese characters, bold, italic and underline are kept. Removed fonts or positioning are reported.

Can I convert SRT with missing or unordered cue numbers?

Recognisable cues are normalised. Unordered start times are stably sorted and reported; invalid timestamps still block export.

Can I use the VTT file in a web video player?

Use the output with a WebVTT-capable subtitle track, and check it in your target player. This site does not host video.