Compress Audio
Reduce audio file size by lowering bitrate
How It Works
Select Your File
Upload, drag & drop, or paste directly from clipboard.
Configure Options
Set quality level and output format.
Download Result
Processed entirely in your browser. Download instantly.
About Compress Audio
Reduce the file size of any audio file by re-encoding at a lower bitrate, entirely in your browser. Choose from target bitrates: 64 kbps (small, suitable for speech), 96 kbps (good for podcasts), 128 kbps (standard quality), 192 kbps (high quality), or 320 kbps (near-lossless). This tool re-encodes the audio using FFmpeg –processing happens 100% locally with no file uploads. Perfect for reducing audio file sizes for email attachments, web uploads, or freeing up storage space. Supports MP3, WAV, OGG, AAC, FLAC, and M4A input formats.
Frequently Asked Questions
What bitrate should I use?
64 kbps for voice/speech, 128 kbps for general use, 192 kbps for music, 320 kbps when quality is critical.
How much will the file shrink?
Depends on the source. A 50 MB WAV becomes ~3.5 MB at 128 kbps. A 10 MB 320kbps MP3 becomes ~4 MB at 128 kbps.
Is this lossy compression?
Yes. Audio data is permanently discarded to reduce file size. Keep your original file if you may need full quality later.