This was an amazing find! Since my iPad Pro has become my main device I wanted the ability to mirror the display onto my 27” iMac at work. Surprisingly, you don’t need to purchase anything! Simply use your Lightning to USB cable that came with your iPhone or iPad and plug it into the back of your iMac. Then, launch QuickTime.
Open QuickTime, then click File > New Movie Recording > Press the “down” arrow near the red “record” button, and set it to your iPad (or your iPhone). That’s it!
You can also record your screen for presentations if you want. It’s easy!
Now I can build my presentations, do my layouts and retouch photos using my iPad Pro with it all displaying on my iMac at work.