It’s easy to take a screenshot on your iPhone to keep a copy of something in your photo library for later. You can even screenshot a whole page on an iPhone at once using a somewhat hidden feature.
If you want to take a screenshot of something like an in-depth recipe, a lengthy email or anything else that doesn’t fit on your iPhone screen, you can take an extended screenshot. Instead of filling your library with five separate images, you can use your iPhone to screenshot the entire page (or a large section of it) without using an app to stitch them together after the fact.
Here’s how it’s done. (I’ll show you how to do this on a Mac, too.)