Whether you need to compress photos for a printer or crop them for a website, the various methods to do so are shown below. Preview is a photo and PDF viewer that lets you customize your photo files on a Mac. This app is available in all versions of macOS. One of the easiest ways to resize a picture on a Mac is by using the Preview application. How to resize an image on a Mac using Preview Download a free trial and see how quickly you can find the largest and unused files on your Mac. If you want to find the largest files on your Mac, you can use a special application from Nektony called Disk Space Analyzer.ĭisk Space Analyzer scans your hard drive (or any external disk) and shows you what is taking up the most space on it. Just click it, select Add Shortcut, and finally, enter your custom key combination.Large images can take up significant space on your Mac’s hard drive, which can cause your Mac to run slowly. Select Services from the sidebar and you should find Resize Image near the bottom of the list. Why not assign a key shortcut to your image resize service to speed up the process? To do so, launch System Preferences, select the Keyboard pane, and click the Shortcuts tab. You can also drag a selection box over several images and resize them all in one go using the service.

Next time you want to resize an image, simply right-click (or Ctrl-click) the file in Finder and select Services -> Resize Image from the contextual dropdown menu.

In the Automator menu bar, select File -> Save., call your new service 'Resize Image', and click Save.

In the Scale Images action panel, type the width that you want to resize your images to.

We're sticking to a simple workflow of resizing images here, so we click Don't Add.

Automator will prompt you to add a Copy Finder Items Action to save the original files in a separate folder.

Select Photos in the Actions sidebar, and drag Scale Images to the workflow area.

Select Files and Folders in the Actions sidebar, and drag Get Specified Finder Items to the workflow area.

Click the Service receives selected dropdown menu and select image files.

Choose Service as the type of your document.

Launch Automator from the Applications folder.

How to Create a Resize Image Service in Automator In this article, we'll show you how to use the Automator app to create a simple service that will have you resizing images in just a couple of clicks, without even going near an image editing app. Resizing images in macOS is easily done in the Preview app, but if your daily workflow requires you to scale images to a specific size – for uploading to a blog, for example – then using an image resize service is a much faster way of getting the job done.

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