I enjoy reading through a post with extra details, some funny anecdotes, and a few screenshots. I also like posts that just flat out tell you exactly how to do something. If you want to use SVG icons in your app, this post will tell you how to set it up.
SVG converted to PDF icons are perfect because you can scale them to all sizes and ultimately reduce your app size. You can even host the SVG with a third-party library like SwiftSVG
Using SVG / PDF assets in your iOS app by Rex Feng