It is now available at: https://nojhan.net/git/nojhan/legood
You can federate with it from Codeberg or another Forgejo instance.
Please consider self-hosting to preserve the open Web, I highly recommend: https://yunohost.org
It is provided in the Scalable Vector Graphic format, made with Inkscape. SVG should be portable enough to be opened in many other softwares (Illustrator, Corel, Gimp, LibreOffice, any browser...).
Legood is covered by the CC-BY license, so when making diagram with it, you must indicate its origin. For instance, by adding: "(made with Legood)".