How can I print from my iPad PRO?

The easiest thing is to buy the right printer.

The iPad uses a print technology called AirPrint. Airprint is a particular communication protocol that flows over WiFi. So, having a WiiFi printer isn't sufficient. The printer needs to be of an Airprint variety of WiFi.

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List of supported AirPrinters.

https://support.apple.com/en-us/HT201311

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printing to a non-airprinter from an iPad

To print from the iPad, your going to have to install some more software:

-- install a printer app on the ipad. many printer makers have iPad applications for their printers. Look in the app store

-- install enabling software on a computer which you have connected the printer

Helper app -- /print n share

Print directly to the widest range of network or WiFi printers available in any app. Alternatively print via your computer to ALL printers including USB & Bluetooth printers. View read and display large PDF, Office & iWork files. Easily transfer & store files from the Cloud or your computer.

https://itunes.apple.com/us/app/print-n-share/id301656026?mt=8

If is a WiFi printer that does not support airprint, there are apps that may work. One is Print n Share

Print n Share by EuroSmartz Ltd https://itunes.apple.com/us/app/print-n-share/id301656026?mt=8

Hi

Printer need to have wifi read instructions for make of printer online.

Cheers

Brian 🇬-1F1E7;