True that. I've written a few Web interfaces for embedded devices in C. That being said, I now try to use Lua along with C for projects of this type. It all really depends on memory and performance requirements.

I was once part of a team on a project that we wrote an embedded webserver that we compiled in all the html, images(converted to c arrays), css and js, into a single binary so that we wouldn't have to read from flash to load those resources for speed boost and less flash access.

I've learned now, that given the target hardware and resources, that wasn't really necessary...

Router configuration pages are usually awful. With string handling being an awful pain in C, it might explain why my router only does validation in javascript (thankfully, it means I can disable it when it is wrong).