README.test-pngs.md

test-pngs.cmd: compare lossless PNG compression programs.
The programs tested:

• advpng and advdef: https://github.com/amadvance/advancecomp
• ect: https://github.com/fhanau/Efficient-Compression-Tool
• optipng: https://optipng.sourceforge.net
• oxipng: https://github.com/shssoichiro/oxipng
• pingo: https://www.css-ig.net/pingo
• pngcrush: https://pmt.sourceforge.io/pngcrush/
• PngOptimizer: https://psydk.org/pngoptimizer
• pngout: http://www.advsys.net/ken/utils.htm
• TruePNG: http://x128.ho.ua/pngutils.html

Put your test image file in the same directory as the script with the name test.png and run the script.
The result should be saved into testpng-result.txt.