Font Face Observer, a fairly new delivery mechanism developed by Adobe Typekit engineer Bram Stein, uses JavaScript’s scroll events to load and monitor web fonts. Unlike the Web Font Loader, the Font Face Observer can be referenced at the end of document to avoid the extra overhead. https://prowebtype.com/delivering-web…

optimizing webfont loading will be even more important if we switch out the body text as well to a webfont.