Hello,

to anyone interested or curious, I made some time ago PHP tools for Diablo II.

PHP tool for reading Diablo II character saves, stashes and items and with extension to export any game item to d2i file.
https://github.com/TheDude-gh/diablo2ciri

PHP tool for extracting monster graphics and making static or animated images
https://github.com/TheDude-gh/diablo2graphics