Shortcuts are exported from the iOS Shortcuts app with a .shortcut extension in iOS 14 and later, or a .shortcuts extension in iOS 13. Workflows exported from the Workflows app used a .wflow extension ...

Otherwise, best i can think of is to get iExplore or something like that, which lets you navigate the iphone file structure via USB from your computer. Don't think it needs jailbreaking.

As it’s a new container format, there will be some incompatibilities along the way, and Apple does a good job at handling most of these. iOS 11 will automatically share HEIC files as the default ...