MacRumors.comLatest iOS 17 Beta Includes 'Save to Photos' Option in Full-Page Screenshot Interface, Plus Better Dual-SIM Support https://www.macrumors.com/2023/07/13/ios-17-beta-save-full-page-screenshot-image/?utm_source=dlvr.it&utm_medium=mastodon
CTD@macrumors Wow. I had no idea this full-screen screenshot capability existed. Not sure what I will do with the 3,180 * 28,880 image I just captured but this is really cool. Thanks for the heads up.
Boba 
@CTD @macrumors I believe it's been in there since iOS15 (when they introduced the redesigned screenshot UI), but up until this beta you could only save full page screenshots as PDFs for some inexplicable reason.
@theboba @macrumors Heh, never noticed it before. It isn’t completely undiscoverable either.
@CTD @macrumors To be fair, it only shows up occasionally. AFAIK it doesn't work in most apps. The only places I remember it working off the top of my head are Apple Maps & Safari