Audio Compressor
Compress MP3, WAV, M4A and other audio files in your browser. Choose quality presets or target file size — private, no upload required.
Drop a file into the audio compressor
Drag and drop or click to choose. This audio compressor processes everything locally — max 500MB.
MP3, WAV, AAC, FLAC, OGG, M4A, Opus, MP4, MOV, WebM
Detecting encoder support…
No file? Try a sample in another format
Click to load — test the audio compressor on MP3, WAV, FLAC, MP4 and more
How this audio compressor works
Add a file
Upload audio or video (up to 500MB). The audio compressor decodes it locally and shows a waveform preview so you can confirm the right track before compressing.
Choose settings
Select a quality preset or target file size, then pick MP3, AAC, or Opus output. The audio compressor adjusts bitrate to match your chosen mode.
Compress & download
Click Compress and download your smaller file when processing finishes. Run the audio compressor again on another track anytime required.
Audio Compression Features
Nothing leaves your browser
This audio compressor encodes locally with WebCodecs. Your recordings, mixes, and voice memos stay on your device — we never receive your files.
Preset or target size
Pick High, Balanced, or Small quality presets, or set an exact megabyte target and let the audio compressor find the best bitrate automatically.
Extract from video
Drop an MP4 or MOV clip and the audio compressor extracts and shrinks the audio track to a smaller MP3 or AAC file — handy for screen recordings and social clips.
Pairs with our audio tools
Use this audio compressor alongside Audio Converter, Vocal Remover, and Audio Editor for a full local audio workflow without desktop software.
Audio compressor FAQ
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