How does the compression work?

The tool reduces the sample rate of your audio. A lower sample rate means fewer audio samples per second, which produces a smaller file. This is a lossy process — some high-frequency content is removed.

What is the difference between the quality presets?

Low (8 kHz) is suitable for voice recordings and produces the smallest files. Medium (22 kHz) is a good all-purpose option. High (44 kHz) preserves music quality while still reducing file size compared to higher sample rates.

Which preset is best for voice versus music?

For voice recordings like podcasts or phone calls, Low or Medium is usually sufficient. For music, use High to retain the full frequency range.

What format is the output?

The output is a WAV file at the selected sample rate. WAV uses no codec compression, so the file size reduction comes entirely from the lower sample rate.

Is my audio uploaded to a server?

No. All processing happens locally in your browser using the Web Audio API. Your file never leaves your device.

Compress Audio — Reduce Audio File Size Online Free | Toolivon

Compress Audio — Reduce File Size

Shrink audio files by reducing the sample rate. Choose quality vs. size tradeoff.

Your audio never leaves your browser. All processing uses the Web Audio API locally.

Compression reduces file size by lowering the sample rate. Lower quality = smaller file.

Drop an audio file to compress

or click to browse — MP3, WAV, OGG, AAC, FLAC, M4A

Related Audio Tools

View all →

Trim Audio

Popular

Cut audio to a precise start and end time in your browser

Merge Audio

Popular

Combine multiple audio files into one seamless track

Volume Booster

Popular

Increase the volume of any audio file by up to 4×

Volume Reducer

Decrease the volume of any audio file precisely

How to Use

1
Upload your audio file
Click 'Choose File' or drag and drop your audio onto the upload area.
2
Select a quality preset
Choose Low (8 kHz) for smallest size, Medium (22 kHz) for a balanced result, or High (44 kHz) for near-original quality.
3
Click Compress Audio
Hit the Compress Audio button. The tool resamples your audio to the target sample rate in your browser.
4
See the size comparison
Review the before and after file sizes to see how much space was saved.
5
Download the compressed file
Click Download to save the compressed WAV to your device.

Frequently Asked Questions

Loading audio tools…

How to Use

Upload your audio file

Click 'Choose File' or drag and drop your audio onto the upload area.

Select a quality preset

Choose Low (8 kHz) for smallest size, Medium (22 kHz) for a balanced result, or High (44 kHz) for near-original quality.

Click Compress Audio

Hit the Compress Audio button. The tool resamples your audio to the target sample rate in your browser.