Solutions for Banner Ads in the Post-Flash World in Blog Posted August 18, 2015 In regards to web fonts and file size, i am also finding great discrepancies between ad server platforms and publishers spec and recommendation. It would seem as though in actual fact - nobody knows! Our approach currently is to locally store webfonts (ttf, woff, eot and svg) and load them using @font-face - this will only load up the format that's needed. I am setting a standard spec to work within, and will have to liaise with publishers on this as we go along, but i am aiming to do the following: Count file size as being js files, css, images and html, as well as the largest font format file. Llink GSAP via CDN. I aim to be within 200k on this. which would mean everything bar fonts in the zip file is is going to be around 100-140k in size.