I just found this tiny web browser project that is crazy small it also implements some kind of scripting language. What do you think about adding a browser widget? There is not much info but I looked through the files a bit. It uses OpenGL, Glad and SDL for the rendering so that all needs to be adapted but the parser and the rest is really light weight. The entire download is under 450kb and 33KB of that is a doge picture
It would let users create an ebook, newspaper, rss reader, a digital display, one of those mirrors with news and weather info integrated and many other cool gadgets.
It wouldn’t need the full html spec or css for most purposes to keep it small enough but having the basic elements to display text and images and set some colors would be plenty. A MCU wouldn’t be powerful enough for modern html anyway. A lot of projects just require displaying text and images and linking which can all be done with html and inline html styles.
I don’t think it is high priority but would be nice to keep in mind for later releases. Once the basics are integrated others can worry about extending it more.