Have you ever been looking at a document using the versatile Preview App in macOS and want to get a little closer look? You can easily do that using the ‘Magnification’ feature. This feature opens a smaller window that views the base document much like what you would see if you were holding a magnifying glass and moving it over a paper document.
This feature works for both images and PDF files viewed through Preview. To invoke the feature either go to Tools >> Show Magnifier in the menu bar, or simply hit the “tilda (~) key” at the top left corner of your keyboard. Doing either a second time will turn off the magnifier.
This isn’t a feature I use every day, but it can come in handy.
See my other Mac OS X articles