Welcome!
I am Demetris Kikizas and this is my online notebook for recipes and how-tos. The recipes are for web development and related topics — not food! Have a good time!
Recent posts
oxipng and friends: A comparison of PNG optimization tools
11 September 2025
A comparison of PNG compression with optipng, oxipng, and FileOptimizer; also includes results of lossless conversion from PNG to WebP
Omni Carousel
11 July 2025
Earlier this month I published Omni Carousel — Check it out!
WooCommerce hooks added in versions 6.0 to 8.3
30 November 2023
Recent updates
oxipng and friends: A comparison of PNG optimization tools
Updated 16 September 2025
A comparison of PNG compression with optipng, oxipng, and FileOptimizer; also includes results of lossless conversion from PNG to WebP
PHP versions in Linux distributions
Updated 7 September 2025
Debian manpages
Updated 10 June 2024