Audio Compressor - Reduce MP3 and WAV Size Online
Shrink audio files in seconds. Pick quality and format, keep great sound. Free, private, no signup.
Tool Interface
Drop an audio file here or click to browse
MP3, WAV, OGG, M4A, FLAC - up to 100MB
Processing...
How to use
- Upload an audio file - drag and drop or click to browse (MP3, WAV, OGG, M4A supported).
- Choose quality and format - lower bitrate means smaller file; WebM is smallest, MP4 plays everywhere.
- Click Compress Audio - processing happens entirely in your browser.
- Download the result - compare sizes and save the compressed file.
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About This Tool
About This Tool
The Trencada Audio Compressor reduces the size of your audio files without a noticeable drop in quality. Upload an MP3, WAV, OGG, or M4A file, pick an output quality and format, and download a much smaller file. Everything runs in your browser using the Web Audio API. Your files never leave your device.
Key Features
- Three quality presets: 64 kbps, 128 kbps, 192 kbps
- Two output formats: WebM (Opus) for smallest size, MP4 (AAC) for widest compatibility
- Before and after size comparison with percentage saved
- Supports MP3, WAV, OGG, M4A, FLAC input up to 100MB
- 100 percent client-side processing for full privacy
- No signup, no watermark, no limits
How to Use
- Upload an audio file by dragging it in or clicking to browse.
- Choose an output quality and format.
- Click Compress Audio and wait for processing to finish.
- Compare the sizes and download your compressed file.
Which Quality Should You Pick
64 kbps is ideal for voice recordings and podcasts where small size matters most. 128 kbps is the sweet spot for most uses, with clear sound at roughly a tenth of a WAV file size. 192 kbps preserves music detail for listeners who care about fidelity.
FAQ
Is my audio uploaded anywhere? No. All processing happens in your browser. Nothing is sent to any server.
Will compression hurt sound quality? At 128 kbps and above, most listeners cannot tell the difference from the original. Lower settings save more space with some quality tradeoff.
What formats can I upload? MP3, WAV, OGG, M4A, FLAC, and most other common audio formats up to 100MB.
What format will I get back? WebM with Opus audio (smallest) or MP4 with AAC audio (plays on every device), depending on your choice.