Free Online Audio Compressor

This audio compressor reduces the file size of your MP3, WAV, or other audio files while keeping sound quality clear, powered by Notie. It's useful when a file is too large to email, upload, or send over messaging apps. Compress your audio directly in the browser without installing anything.

Try It Free

Free to start · No credit card required · Works on iPhone & Android

How to use the audio compressor

Upload your audio file

Add the audio file you want to shrink down in size.

AI compresses the file

Notie reduces the file size while preserving as much sound clarity as possible.

Download the compressed audio

Save your smaller audio file, ready to email, upload, or share right away.

Why use Notie's audio compressor

Free to use

Compress your first audio files at no cost, with no watermark.

Keeps sound clear

Notie balances file size reduction with maintaining clean, listenable audio.

Fast processing

Most audio files compress within seconds, even longer recordings.

Works on any device

Compress audio files from your phone, tablet, or desktop browser.

Audio Compressor FAQs

How much smaller will my audio file get?

Results vary depending on the original format and bitrate, but most files shrink significantly while remaining clear enough for everyday listening.

Will compression make my audio sound worse?

Notie's compression is tuned to minimize noticeable quality loss, so most compressed files still sound clear on phones and speakers.

What's the difference between this and the audio converter?

This tool focuses purely on reducing file size, while our online audio converter changes the file format. You can use both together if needed.

Can I transcribe my audio after compressing it?

Yes, once compressed you can run the file through our audio to text converter to get a written transcript.

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