Compress Image
Drop an image here or click to browse
JPG, PNG, WebP, AVIF
How it works
1
Drop your images
Drop one or more JPG, PNG, or WebP images.
2
Set compression level
Use the quality slider to balance file size and visual quality.
3
Download compressed images
Images download immediately. Nothing leaves your device.
Why Mutari?
- ✓ Your files never leave your browser. No server processing, ever
- ✓ Works offline once the page loads
- ✓ No account, no signup, completely free
- ✓ Powered by WebAssembly for fast, native-speed processing
Unlike cloud-based tools
Most online PDF tools upload your files to their servers for processing. Mutari is different: everything runs in your browser using WebAssembly. No file ever leaves your device, which means no privacy risk, no upload wait time, and no file size restrictions imposed by server limits.
Frequently asked questions
How much can I reduce file size?
Typically 40-80% depending on the image and quality setting. The before/after sizes are shown after compression.
Which formats can be compressed?
JPG, PNG, and WebP images. PNG files are converted to WebP for effective compression since PNG is lossless.
Is there a quality slider?
Yes. Adjust the quality slider to balance file size and visual quality. Lower quality means smaller files.