Hard Wired Toolbox

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Use conversion, trimming, crop, and utility tools directly in your browser with a clean and private workflow.

Media utility

Subtitle Toolkit (SRT/VTT)

Upload a subtitle file, shift all cue timings, and convert between SRT and VTT. Processing is fully local and private.

How To Use

  1. Upload an SRT or VTT subtitle file.
  2. Set shift seconds using a negative or positive value.
  3. Choose output format or keep the same as input.
  4. Apply changes and download the updated subtitle file.

Common Use Cases

  • Fix subtitle sync offsets after re-encoding video.
  • Convert subtitle files between SRT and VTT.
  • Prepare subtitles for web players or editing tools.

FAQ

Is subtitle processing private?

Yes. All subtitle parsing and conversion runs locally in your browser.

Can I use negative time shift?

Yes. Negative values move subtitles earlier, while positive values delay them.