Haven't heard of Zepto. Will check that out. I realize too that ~70KB is not bad really. But I was working on a site for a client where their internet speed is 0.3Mbps and a ~300KB file was taking ~300ms+ to load. No maybe more than that actually(can't recall right now). 1KB files were taking a second to load. I don't know, had to figure out a closer data center and change the site a lot with how it loaded stuff.