Connecting an iPad to a printer on another (LAN) network I am wondering if it is possible to issue a command to print a PDF file from my iPad (connected to a WiFi network), to a printer which is connected to a LAN, provided I know the (global) IP address or URL of the printer.

I routinely print research papers, and to do this, I have to issue a command from a Mac or a laptop to print the PDF file. But I'd like to be able to do this from my iPad.

Is this possible? I haven't found any app on the App Store which can do this, but I haven't tried all possible apps of course.
For many years, I have been using Readdle's Printer Pro application for iOS. The app costs a few dollars, but seems to do the trick for me. It also works with all other Readdle apps, such as Scanner Pro, and Documents 5.

Printer Pro - print documents, photos, web pages and email attachments by Readdle
https://appsto.re/ca/hVxCx.i