

There are plenty of other options for both Windows and macOS if you want to use third-party tools, but this is probably easier for most people. It's only really a bit more troublesome to set up the first time, but it saves you a lot of time in the long run. As a Windows user, PowerToys is my go-to for resizing images now, since I can work with multiple images with just a few clicks. It's admittedly a bit easier to get this done on macOS, but it's not a difficult process either way. Then, in Preview, make sure you select the thumbnails for all the images you want to resize before using the Adjust Size option.Īnd that's about it. First, select all the images you want in Finder and open them with Preview. If you want to resize your images in bulk, the process is similar, but there are a couple of things you need to pay attention to.

When you resize an image, you can also set custom dimensions each time, so it's up to you what sizes you want available more quickly. You can change the existing presets or add a new one.
