Sidecar in macOS turns your iPad into a second display, but it's limited to certain Macs and iPads. Thankfully, a few ...

You can use your iPad as a second monitor with a Mac or Windows computer, with a free option available. Here's how you can do it.

You don't need a bulky monitor to extend your workspace. If you use an Apple computer, all you need is an iPad and learn to use the Sidecar feature.

With Sidecar, you can use your iPad to mirror content to your Mac or extend it to your tablet.

If you see the same thing on both displays, you should start by making sure the displays are Extended instead of Mirroring ...