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Audio Suite

Convert formats, trim waveforms with a visual editor, and extract audio from video — all in your browser using FFmpeg.wasm.

Tools

Format Converter

Converts audio files between common formats. Also extracts audio tracks from video files.

Supported input formats: MP3, WAV, AAC, OGG, FLAC, OPUS, M4A, AIFF, MP4, MOV, and more.

Supported output formats: MP3, WAV, AAC, OGG, FLAC, M4A.

How to use:

  1. Upload an audio or video file.
  2. Select the target output format.
  3. Click Convert.
  4. Download the converted file.

Waveform Trimmer

Trim precise segments from audio files using a visual waveform editor.

How to use:

  1. Upload an audio file.
  2. The waveform renders in the editor.
  3. Drag the start and end handles to define your trim region.
  4. Use the playback controls to preview the selection.
  5. Adjust fade-in, fade-out, and speed if needed.
  6. Click Export to render the trimmed audio.
  7. Download the output file.

Effects

The trimmer includes optional audio effects:

  • Fade in / Fade out — apply a linear volume ramp at the beginning or end of the clip.
  • Speed — adjust playback speed (0.5× to 2×) without pitch shift.
  • Normalize — apply integrated loudness normalization (EBU R128 target) for more consistent playback levels.

Privacy

All processing runs locally via FFmpeg.wasm. Your audio files are never uploaded to any server.

Notes

  • Very large files (>500 MB) may be slow on low-RAM devices.
  • The waveform viewer uses WaveSurfer.js and may take a few seconds to render long files.
  • Loop playback of the selected region is available in the trimmer via the loop toggle.