How to configure the ability to “copy to (my App)” file from the browser in Swift?

Question

iOS

I just can not figure out how to make it possible to save the file in the application from the browser.

Here's a plan:

Share extension considered, but there is a form with “post” I don’t really understand whether it is possible without this form and if so, how to work with the file itself through it.
Thanks in advance
PS Swift started writing something 6 days ago, please answer like a newbie))

Answer 1

https://medium.com/if-let-swift-programming/managi...