Image Compressor — Free, Private, In-Browser JPG/PNG/WebP Compressor

Drop images here, or click to choose

JPG · PNG · WebP — up to dozens of files at once

Quality 70 Convert to WebP (usually smaller)

Private by design. Compression happens entirely in your browser using canvas and Web Workers. No image is ever uploaded.

Results

Add images to get started.

How it works

Drop JPG, PNG, or WebP files into the drop-zone. The browser re-encodes each file with the quality you choose, using the browser-image-compression library in a Web Worker. Nothing is uploaded — the original and the compressed copy both live only in memory on your device. Close the tab and they are gone.

Tips

Quality 70–80 is the usual sweet spot for photos.
“Convert to WebP” often saves 20–40% on JPGs at the same quality.
For diagrams, screenshots and flat-colour PNGs, lossy compression can damage edges — try quality 90+ or keep them as PNG.