I'm building an online photoshop-mini-like web app using Angular, for the sake of decreasing the load time, especially the fonts where I thought about fetching them from my backend (Google fonts don't include all the needed fonts).
So, what I really want is to cache each font a user chooses to use, so when he switches back to a loaded font the application won't fetch the backend for an existing one.
What I thought about is using fontFaceObserver a Webfont loading. Simple, small, and efficient. But, I didn't find a way to cache the fonts.