Presenting beautiful type on your website nowadays could not be easier. With popular web font services such as Adobe Typekit, Google Fonts, and Hoefler &Co.’s Cloud.typography, getting web-ready typefaces to display on a site is as simple as adding one line of markup. Unlike the old days of web design when all you had to work with were a handful of default system fonts (Arial, Verdana, Helvetica, Georgia, and Times New Roman), now you have thousands of fonts to choose from. However, with too many choices at your disposal, the process of selecting and combining typefaces can be time-consuming, overwhelming, and intimidating.
Type Rendering Mix is useful in many situations. Let’s say you are using Proxima Nova on your website. Below you can see how the “thin” weight will look in OS X and Windows 7. Due to the way the Core Text rasterizer works, fonts will look heavier on OS X and iOS than on other platforms.