Image compressors

Purpose-tuned compression per format — MozJPEG for JPEG, OxiPNG (+ optional palette reduction) for PNG, libwebp, libavif, libjxl and ImageMagick for the rest. Local, free, no upload.

Compress JPEG

The universal photo format. Small files, opens everywhere, no transparency.

Compress PNG

Lossless with full transparency. The standard for screenshots, logos and UI graphics.

Compress WebP

Google's web format: ~30% smaller than JPEG, supports transparency and animation.

Compress AVIF

The best compression available in browsers today — often half the size of JPEG.

Compress JPEG XL

The designated JPEG successor: superb quality, lossless JPEG recompression, HDR.

Compress GIF

The ancient animation format. 256 colors, universally supported, huge files.

Compress BMP

Uncompressed Windows bitmaps. Huge files — almost always worth converting.

Compress TIFF

The professional print and scanning format. High quality, very large, not web-viewable.

Compress HEIC

The iPhone photo format. Half the size of JPEG — until you try to open it anywhere else.