ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety ...

FileOptimizer is a lossless file size optimizer supporting AIR, APK, APNG APPX, BMP, CBZ, DOCX, DLL, EPUB, EXE, GIF, GZ, ICO, ...

PngOptimizer compresses graphics files and removes extra, unnecessary data without affecting quality. It will update PNG files ...

Phatch = Photo & Batch! Phatch is a simple to use cross-platform GUI Photo Batch Processor which handles all popular image ...

Caesium Image Compressor lets you compress your pictures up to 90% without visible quality loss. Providing a simple yet effect ...

ImageAlpha is a GUI for pngnq and pngquant. It allows you to easily generate paletted PNG images with full alpha channel. Thes ...

GraphicsMagick is the swiss army knife of image processing. Comprised of 282K physical lines (according to David A. Wheelers S ...

ImageOptim is excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop). It's useful for ...

TinyPNG uses smart lossy compression techniques to reduce the file size of your PNG files. By selectively decreasing the numbe ...

Pngcrush is an optimizer for PNG (Portable Network Graphics) files. It can be run from a commandline in an MSDOS window, or fr ...

OptiPNG is a command-line PNG optimizer that recompresses image files to a smaller size, without losing any information. This ...

PhotoBulk is easy-to-use bulk image editor that lets you add text/image watermark, resize, and optimize hundreds and thousands ...

-Combines PNGOUT, OptiPNG, and DeflOpt to create the smallest PNGs -No image quality is lost — only file size -Converts JPG, G ...

pngquant is a command-line utility and a library for lossy compression of PNG images. The conversion reduces file sizes signif ...

Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the ...