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Convert SRT to VTT Online

Convert subtitles between SRT and VTT, shift their timing by milliseconds or seconds, and renumber cues — privately in your browser.

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Drag & drop any file here or click to select

Drop a .srt or .vtt subtitle file, or paste its text below

Processing... 0%
Reading subtitle input
Parsing cues and timestamps
Applying the selected operation
Building the output file

Result

This page opens the subtitle converter with SRT → VTT conversion already selected — load your .srt file or paste its content, run the tool and download the .vtt result.

The conversion adds the required WEBVTT header and rewrites every timestamp from the SRT comma form (00:01:02,500) to the WebVTT dot form (00:01:02.500), so the file passes HTML5 <track> validation and works with native video players.

Everything happens locally in your browser: the subtitle text is never uploaded, and the same tool can also shift timing or renumber cues if your file needs more than a format change.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Convert SRT to WebVTT and WebVTT to SRT with correct timestamp separators and sequential renumbering.
  • Shift all timestamps forward or backward by milliseconds or seconds; negative results are clamped at 00:00.
  • Load a .srt or .vtt file or paste subtitle text, then download the result with the right extension.

Key Benefits

✓ Complete privacy: subtitle files are parsed and rebuilt entirely in your browser and never uploaded to a server.
✓ Tolerant parser: BOM markers, Windows line endings and stray blank lines between cues do not break the conversion.
✓ Honest conversion notes: when VTT positioning or styling cannot survive the trip to SRT, the tool says exactly how many cues were affected.

Use Cases

  • • Convert a downloaded .srt file to WebVTT so the captions finally load in an HTML5 video player or on a web platform that only accepts .vtt.
  • • Fix out-of-sync subtitles by shifting every timestamp a few hundred milliseconds forward or backward until they match the speech.
  • • Renumber the cues of a subtitle file after cutting or merging scenes, so editors and players stop complaining about broken sequence numbers.