Every time I’ve written about bookmarklets, I’ve had to add a section on how to add them to Safari in iOS. On the Mac, you just drag them up to the bookmark bar, and you’re done. On iOS, the situation was so complex that I wrote a whole how-to just so I could link to that, instead of writing several paragraphs every time. But there is a way to drag and drop bookmarklets on iOS.
I’ve tested it on iOS 12 and iOS 13, and it’s amazing.