Free · No watermark · No login

Free Audio Compressor

Shrink audio or video to an email-friendly size. Pick a preset and VidTools handles the rest, keeping your MP3, WAV, or M4A clear. Runs in your browser.

or drop a file hereMP3, WAV, M4A, FLAC, OGG

Runs locally in your browser Free & unlimited

Instant results
No watermark
No sign-up
No ads
Always free

Why compress audio with VidTools?

One-click presets

Pick a target like 'email size' and we choose sensible settings for you.

Stays clear

We reduce size while keeping speech and music easy to listen to.

No upload

Compression runs in your browser, so your file stays on your device.

Free & unlimited

Compress as many files as you want with no account and no watermark.

How it works

How to compress an audio file

Drop, pick a preset, download.

01
Drop your file
Add an MP3, WAV, or M4A file, or click to browse. It stays on your device.
02
Pick a preset
Choose how small you need it — email size, or a balance of size and quality.
03
Download the result
Save the smaller file, ready to send or upload.

What it's good for

Make audio small enough to send

Big file in, email-friendly file out

Email attachments

Get an audio file under the size limit so it actually sends.

Faster uploads

Shrink a recording so it uploads quickly on a slow connection.

Voice memos

Trim the size of long voice notes before sharing them.

Storage

Keep a smaller copy of a recording without a noticeable quality drop.

How it works

An audio compressor with presets that just work

Audio files get big fast, and most compressors bury you in bitrate settings. VidTools keeps it simple: pick a preset like 'email size' and it chooses sensible settings to shrink your MP3, WAV, or M4A while keeping it clear. Everything runs in your browser, so nothing is uploaded and nothing is stored.

Presets, not homework

You shouldn't need to know what a kilobit is to make a file smaller. Choose a target and VidTools handles the bitrate and format details, balancing size against how good it needs to sound.

Works on video audio too

Got a video that's too big because of its audio? Extract the audio first with Extract Audio, then compress it here, or shrink the whole video with the Video Compressor.