You won't be able to change the font because it's being rendered in webgl. In fact, the page is one big canvas tag. I'm painfully aware of the downsides, but it gives me a lot of control when rendering ANSI art, and will allow me to make a killer desktop GUI app later on (a very fast/efficient opengl program, no electron nonsense).

Before anyone asks about accessibility...i should point out i am still injecting a text-only version into the DOM behind the canvas tag for the sake of screenreaders.

The reason firefox looks so much worse is that it has a smaller webgl size limit than chrome (specifically MAX_RENDERBUFFER_SIZE). When rendering at full resolution, it was not large enough to hold the content sometimes. I only check that webgl value so this will resolve itself if/when firefox increases it.