I've got a shortcut which you apply through sharing on pictures (or lets you select them from Photos if you call it directly), and calls a script on my server w

I've got a shortcut which you apply through sharing on pictures (or lets you select them from Photos if you call it directly), and calls a script on my server which takes the picture as data on stdin. The script on the server processes the picture and puts it online on my webserver, and returns the new URL back on stdout. The shortcut takes that URL, puts it in clipboard, opens it in Safari, and offers you to send it via Airdrop to somewhere. Works on iOS and macOS, and on macOS I have a variant that calls the shortcut but with a screenshot, i.e. it first asks me to select a part of the screen and uses that.