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📉 Audio Compressor

How Audio Compression Works

Audio compression reduces file size by lowering the bitrate and sample rate. Our tool lets you upload an audio file, adjust compression settings, and download a smaller version. This is useful for saving storage space, reducing bandwidth usage, or meeting file size limits.

The bitrate controls how much data is used per second of audio. Lower bitrates create smaller files but reduce quality. The sample rate controls the frequency range — 44100 Hz is CD quality, while 22050 Hz is acceptable for speech.

Pro Tips

  • For speech recordings, 64-96 kbps is usually sufficient while maintaining good clarity.
  • For music, use 192-256 kbps to preserve audio quality. Going below 128 kbps may introduce noticeable artifacts.
  • WAV files are uncompressed and very large. Converting to compressed formats can reduce size by 80-90%.

Frequently Asked Questions

What is audio compression?

Audio compression reduces the file size of audio recordings by removing less audible sounds and reducing precision. It balances quality against file size.

Does compression affect audio quality?

Yes, compression reduces quality. Higher compression (smaller files) removes more audio data, which can introduce artifacts. The key is finding the right balance for your use case.

What is the best bitrate for speech?

For clear speech, a bitrate of 64-96 kbps with the MP3 format works well. For podcasts, 128 kbps is recommended.

Can I batch compress multiple files?

Our tool processes one file at a time. For batch processing, you would need dedicated software.

Is my audio uploaded to a server?

No. All audio processing happens entirely in your browser. Your files never leave your device.