📦 Audio Compressor

Reduce audio file size by adjusting bitrate, sample rate, and format — no upload

🚧

Coming Soon

Audio Compressor is currently under development. Meanwhile, try our existing tools:

✂️ Audio Trimmer 🔄 Converter 🔊 Text to Speech
📉
Bitrate Control
Choose bitrate from 64kbps to 320kbps for optimal size vs quality.
🎚️
Sample Rate Options
Reduce sample rate from 48kHz to 22kHz or 16kHz for smaller files.
📊
Size Preview
See estimated file size before compressing.
🔒
100% Private
All processing in your browser. Files never leave your device.

Free Online Audio File Compressor

Audio Compressor lets you reduce the file size of your audio by adjusting bitrate, sample rate, and output format. Perfect for when you need to fit audio files into email attachments, messaging apps, or storage limits.

How Audio Compression Works

Lossy audio compression (MP3, OGG) removes inaudible frequencies to reduce file size. A 44MB WAV file can be compressed to a 4MB MP3 at 128kbps — a 10x reduction with minimal quality loss for most use cases. Higher bitrates (256-320kbps) preserve more detail for music.

Choosing the Right Bitrate

64kbps — voice recordings, podcasts (smallest files). 128kbps — general purpose, good quality for most uses. 192kbps — high quality for music. 320kbps — maximum quality, indistinguishable from uncompressed for most listeners.

While Audio Compressor is being built, try our Audio Trimmer, Audio Converter, Text to Speech, or Voice to Text.

Frequently Asked Questions

How much can I reduce audio file size?
Depending on the source, you can reduce WAV files by 5-20x by converting to MP3. A 50MB WAV becomes ~5MB at 128kbps.
Does compression affect quality?
Yes, lossy compression removes some audio data. At 192kbps+ most people cannot tell the difference from the original.
Is my audio uploaded?
No. All compression happens in your browser. Files never leave your device.