Displaying large maps on website without a server behind it

Hey, just curious, is there any way to run the dynmap tiles through some google maps code or something? How does this website do it?

I did a quick search and found tectonicus or cartographer could potentially manage, but I tried cartographer and it crashed, and tectonicus looks way too high detail (I want to try it on a world that's currently 14gb and growing, and it says the output files are often larger than the actual world)

Minecraft World Map's world generation runs off Overviewer (http://overviewer.org). It requires fairly low on resources that I am aware of, and is quite fast.