png-optimizer

Windows/Linux/MacOS binaries and shell scripts for PNG image optimization:

OptiPNG

Advanced PNG optimizer. Copyright (C) 2001-2010 Cosmin Truta. Home page: http://optipng.sourceforge.net/

OptiPNG/Linux 0.6.4 OptiPNG/Windows 0.7.5 OptiPNG/MacOS 0.7.7

• optipng.sh - process all *.png files in current directory with all optimization settings
• optipng.bat - the same for Windows
• optipng-fast.sh - process with default settings (fast)
• optipng-no-blend.sh - process with all optimization settings, but blending is forbidden

PNGOUT

Ken Silverman's lossless PNG optimizer. Home page: http://advsys.net/ken/utils.htm

• pngout.sh - process all *.png files in current directory
• pngout.bat - the same for Windows
• pngout-fast.sh - process with default settings (fast)
• pngout-long.sh - process with all possible optimization settings (long)

GIF Optimizer

Home page: http://chemware.co.nz/tgo.htm Trout's GIF Optimizer 2.3

Gifsicle

'Gifsicle' manipulates GIF images. Its most common uses include combining single images into animations, adding transparency, optimizing animations for space, and printing information about GIFs. Report bugs to ekohler@gmail.com.

JPEGTran

JPEG manipulation, including marker stripping, Huffman table optimization, conversion to progressive JPEG, and lossless resize/rotation.