I've been looking all over and all the documentation generators for c# I've found needs to be installed on the developer's computer - at least as a visual studio extension.

I can't install anything on my computer, and since it's for a side project I really wouldn't want to ask the IT department to install SandCastle (or DocFx or whatever) for me.

Isn't there a free only xml-to-html converter that can generate a half-decent html documentation from a project's xml documentation file?

Sure, it can be done using xslt and css, but I was kinda hoping there's already something out there, since it's been at least 15 years since I've last worked with xslt and probably 10 since I last wrote css...