Compress Audio Online Free
Reduce audio file sizes for podcasts, email attachments, Discord uploads, and web streaming. Choose from balanced presets or customize target bitrates.
Upload Audio for Compression
Compress MP3, WAV, AAC, and FLAC audio files client-side. Optimize file size for web, email, podcasts, and discord.
How to Use Audio Compressor
Upload Audio
Drag and drop your MP3, WAV, or M4A audio track.
Select Preset
Choose Maximum Compression (96k), Balanced (128k), High Quality (192k), or Custom.
Compress & Download
Inspect byte savings and save the compressed track.
About Audio Compressor
Audio compression achieves file size reduction by re-quantizing PCM audio waveforms to lower bitrates, downsampling frequencies above 16kHz, and applying psychoacoustic Huffman coding.
Supported Formats
Operational Limits
- •Ultra-long recordings (>3 hours) may require extra RAM
Key Features
- Presets: Maximum Compression, Balanced, High Quality, Custom
- Bitrate control from 64kbps to 320kbps
- Mono and stereo channel downmixing
- Estimated output size preview
- Instant byte savings percentage badge
Frequently Asked Questions
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