Are my audio files sent to a server?

No. "Compress an audio file" processes your files directly in your browser: they stay on your device.

Is there a size limit?

The limit mostly depends on your device's memory. Typical audio files (a few hundred MB) go through without any issue; processing takes roughly the length of the audio.

Do I need to create an account?

No. The tool is ready to use right away. A free account is only useful for finding your history again.

Compress an audio file

Shrink your audio files without losing quality.

Reduce an audio file's size by lowering its bitrate, so you can send it by email or free up space on your phone.

Compress Discover the tool

Before

9.2 MB · 320 kb/s

After

1.9 MB · 64 kb/s

QualityBalanced−79 %

Fast and simpleResults in just a few clicks.

Lightweight MP3Plays everywhere.

Pick your level192, 128, or 64 kb/s.

Local processingYour sound stays on your device.

Compress an audio file in seconds

Three simple steps, no installation required.

1ImportAdd your audio files from your device.

2Choose the compressionLevel and mono option.

3DownloadGet your files, in ZIP if needed.

Everything you need with "Compress an audio file"

128 kb/s

Three levels

From highest fidelity to lightest file.

1 channel

Mono option

Ideal for voice.

-79%

Size before/after

See the savings.

MP3

MP3 format

Plays everywhere.

× 20

Multiple files

Process a whole batch at once.

.zip

ZIP download

One archive when you process several files.

Designed for your audio files

See all tools

lightweight-interview.mp3

Get under the attachment limit

lightweight-music.mp3

Phone

Free up storage space

lightweight-clip.mp3

Website

A clip that loads fast

lightweight-voice-note.mp3

Messaging

Send a smaller voice note

Your audio files belong to youYour audio files stay on your device: nothing is uploaded, everything stays private.

Simple. Private. Reliable.Use "Compress an audio file" with complete peace of mind.

Compress