Compress Audio Online
Reduce audio file size up to 90% by adjusting bitrate. Perfect for podcasts, music, and voice recordings. No upload — processed in your browser.
Drop your audio file here
or click to browse files
Your files never leave your device. All processing happens locally in your browser using WebAssembly.
How to Compress Audio
Select or drop an audio file (MP3, WAV, OGG, FLAC)
Choose your preferred bitrate (64k–320k)
Click Compress Audio and wait for processing
Download the compressed audio file
Why Use Our Compress Audio Tool
- Choose from multiple bitrate options (64k to 320k)
- Supports MP3, WAV, OGG, FLAC, AAC, and more
- Reduce file size by up to 90%
- No file size limits
- 100% private — files never leave your device
- Fast compression with FFmpeg WebAssembly
- No signup, no watermarks
- Perfect for podcasts, music, and voice recordings
Compress Audio — Frequently Asked Questions
What bitrate should I choose for audio compression?
128 kbps is a good balance of quality and size for most audio. Use 64 kbps for voice recordings or podcasts where small file size matters. Use 192-320 kbps for music where quality is critical.
How much can I reduce the file size?
It depends on the original file. A WAV file compressed to 128 kbps MP3 can be reduced by 80-90%. An existing MP3 at 320 kbps compressed to 128 kbps will be roughly 60% smaller.
Will audio compression noticeably affect quality?
At 128 kbps and above, most people cannot distinguish the difference from the original. Below 96 kbps, quality loss becomes more noticeable, especially in music with complex instrumentation.
Can I compress audio for podcasts?
Yes! For podcasts, 96-128 kbps provides excellent quality for speech while keeping file sizes small. This makes your podcast episodes faster to download and uses less storage.
Which audio formats are supported?
We support MP3, WAV, OGG, FLAC, AAC, and most other common audio formats as input. The output is in MP3 format for maximum compatibility.
Is my audio file uploaded to a server?
No. Everything runs locally in your browser using WebAssembly. Your audio file never leaves your device.
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