Svgs are cool, but icon fonts are just 10% of their file size

Great dissection, thanks for sharing!

Similarly argued, icon fonts are cool but have x-browser rendering issues, dependence on webkit for accurate anti-aliasing (currently), require sticking to a 32x32 grid, and altogether lead to a massive headache for nimble development. In most cases, especially for new products and low traffic, it's premature optimization. Github's speakerdeck gives a great rundown of their experience:

https://speakerdeck.com/u/jonrohan/p/say-hello-to-octicons

And note, this is Github, who actually has reason to optimize for >2MM users, saying the process was is too complex and tedious.

SVGs are XML, which can be compressed transparently by the web server using GZip, which from my reading on the web typically gets around 70-80% compression on XML files, thus reducing the deficit fairly heavily.

Also, that first comparison chart? "Most browsers don't support the full SVG featureset" - Firefox 3.1, Chrome 1.0, Safari 3.2?

The first graph has the wrong label for the x axis.