Audio Compressor allows you to compress audio files online for free and without losing quality.
Easily compress MP3, WAV, M4A, AAC, FLAC, M4B, OGG, APE audio files.

Upgrade to Premium



/ month

cancel anytime



/ month

cancel anytime

1GB Maximum File Size

Unlimited Conversions/Compressions

High Speed Conversion

High Speed Compression

30 Concurrent Conversions

How to compress audio files?


Step 1: Upload Audio Files

Add the audio files of any format to compress from computer, device or network disk.


Step 2: Compress Audio File

Choose a desired audio quality to reduce audio size and click Compress to run compressing process.


Step 3: Save the Compressed Audio

Download the compressed audio files or save to Dropbox or Google Drive.

Choose other online audio tools if needed:

Cut Audio | Merge Audio | Add Audio to Video | Remove Vocal from Audio | Convert Audio to Video/Audio

Why choose to compress audio?

Easy to Use, Convenient to Share (originally Online UniConverter) can resize audio file online free within several clicks. It works on Windows, Mac, and Linux systems via a web browser. You can save the resized audios to Dropbox and share on Instagram, Facebook, YouTube and so on.

Any Input Formats & Size

You can compress MP3, WAV, M4A, AAC, FLAC, OGG and other audio files in any format, any audio size.

Smart Output Settings

Smart audio resizer to resize audio online free in one click, and further customization like audio Quality, Bitrate, Output Size, and Format are also available to make.

No Watermark Added & No File Limits

Resize audio/video online without any watermark added. You can compress audio file without quantity limits after sign up.

Privacy Security

A secure HTTPS (SSL) connection website, so you can securely upload your files. All your uploaded and compressed files will be automatically deleted from our servers in a few hours.

Fast Compression Speed

This robust song/sound/voice compressor is designed to quickly yet correctly reconstruct your file's original data. Your demand for efficiency is our pursuit!

FAQs about online free audio compressor