When developing a custom composed look in SharePoint 2013, you can specify the font scheme to use via the .spfont file. In the Change the Look page, you can see previews of your fonts in action. For standard fonts, there isn’t anything extra to do, but for web fonts, you can specify font preview images…

When creating your own custom composed looks for SharePoint 2013, you can have your composed look appear in the Change the Look page, with a preview picture. This post will tell you how to get your custom composed look to be available, and cover some of the pitfalls with trying to get your preview picture…