Prior to iOS 13, if you ever needed to take a screenshot of an entire webpage it could be a cumbersome process, often with multiple screenshots that you would then need to piece together. But in iOS 13+, there is an easier way.
How to save an entire webpage in one screenshot
First, load the webpage that you would like to capture in Safari and then follow these steps:
Capture a screenshot as you normally would.
When your screenshot appears in the bottom-left corner of your screen, tap it to open the editor.
Tap the Full Page button toward the top of the editor to capture the entire webpage you were viewing.
Optionally, you can annotate it using the markup tools.
Tap Done and select where to save it.