Online Audio Auto Silence Trimmer tool icon
Silence trimming • FFmpeg.wasm local processing

Online Audio Auto Silence Trimmer

Browser-based audio auto silence trimmer built on ffmpeg.wasm. Configure silence threshold and minimum duration, trim only leading/trailing silence or remove all silent segments, and export cleaned audio as WAV or MP3 with all processing done locally.

Select Audio File

Note: First-time loading of ffmpeg.wasm requires downloading core files (large), which may take time; all processing is done locally in the browser without uploading audio.

Idle
Settings

Note: This tool uses ffmpeg.wasm's silenceremove filter to automatically detect and trim silence. All processing is performed locally in your browser.

Download
FFmpeg Logs

How to Use

  • Click 'Select File' to upload your audio (supports MP3/WAV/AAC, etc.).
  • Click 'Load FFmpeg' to initialize the core component (approx. 20MB, may take time).
  • Set 'Trim Mode': Remove only start/end silence or all silent segments.
  • Adjust 'Silence Threshold' (default -35dB) and 'Min Silence Duration' (default 0.2s).
  • Click 'Start Processing', then 'Preview' and 'Download' the result.

Tips

  • Powered by ffmpeg.wasm silenceremove filter. All processing is done locally.
  • Adjust the threshold based on noise floor; lower values (e.g., -50dB) are stricter.