Whether you’re using an app like Photoshop or just viewing images on a laptop or desktop, you will need to crop them sometimes. Cropping is an essential image editing function for enhancing a photo, removing someone from a shot, reducing the size of an image and much more. While there are many third party apps that can do this, macOS carries the ability to perform this task right in its own bundled Preview and Photos applications.
To crop an image on macOS, you can either open it in Preview or use the Quick Look feature. In either case, you’ll need to click the “Edit” button or select the rectangular selection tool in the Markup toolbar (if it isn’t showing). From there, just drag the corners of the selected area to remove what you don’t want and hit the Crop button.
This will create a new image with just the portion of the original that you have selected. You can then save it and use it wherever you need to. If you change your mind, just hit the Undo Crop button or use Command + Z on the keyboard.
Before you start editing, though, it’s a good idea to make a copy of the image in the first place. This will ensure that you still have the original in case you make a mistake. It’s also a good idea to adjust the image before you crop it. This can include things like adjusting the color, contrast, or tint, as well as adding filters and removing red-eye.