Compress audio online — No Sign Up, No Limits.

Compress audio files online for smaller uploads, downloads and storage. No daily website limits; practical limits depend on your device and browser.

Browser-based privacy Images, PDFs & files No account required

JPG • PNG • WebP • PDF • Documents • More

Compress your files

Compress images directly, or crunch PDFs and other files into a smaller compressed package.

⇩

Drop files here

or click to choose files from your device

Choose files

Uploaded files 0 files

MP3 and MP4 compression runs with FFmpeg directly in your browser. The first media compression may take a little longer while the compressor starts.

Large MP4 and MP3 files: process up to 1.5 GB privately on supported desktop browsers (up to 500 MB on mobile). Device memory and browser limits still apply.

Compression mode

Compression rate

55%

Image resolution

MP4 resolution

Target file size 5 MB target is off

Your crunched files

Images are re-encoded in your browser. PDFs and other files are compressed into a downloadable .gz package. Large files are limited only by your device/browser memory.

Why CompressGecko?

A simple compressor built for people who just want smaller files.

♾️

Up to 1.5 GB on desktop

Large MP4 and MP3 files can be processed privately in supported desktop browsers. Mobile files are limited to 500 MB, and actual capacity depends on your device.

🔐

Private by design

Image compression happens directly in the browser instead of sending your images to a conversion server.

🪄

Gecko-simple

Drop, crunch, download. The interface stays focused on the one thing you came here to do.