How to Resize Jpeg on Mac

Charlotte Daniels

Mac, Tutorials

Do you have a bunch of JPEG images on your Mac that are too large in size? Resizing them can save you valuable disk space and make it easier to share them with others.

In this tutorial, we will guide you step by step on how to resize JPEG images on your Mac. Let’s get started!

Method 1: Using Preview

The Preview app on your Mac is not just for viewing images; it also offers basic editing capabilities, including resizing. Follow these simple steps:

  1. Open the image in Preview: Launch the Finder, locate the image file you want to resize, and double-click it. The image will open in the Preview app.
  2. Select the “Adjust Size” option: In the top menu bar, click on “Tools” and then select “Adjust Size.”

    Alternatively, you can press Command + Option + I as a shortcut.

  3. Set the desired dimensions: In the pop-up window, you can specify either a custom width or height for your image. Make sure to maintain the aspect ratio by enabling the checkbox next to “Scale proportionally. “
  4. Save the resized image: Once you are satisfied with your new dimensions, click on “OK.” To save your changes, go to “File” in the top menu bar and choose “Save” or use Command + S.

Method 2: Using Automator

If you prefer a more automated approach to resizing multiple JPEG images at once, Automator is here to help. Here’s what you need to do:

  1. Launch Automator: You can find Automator in the Applications folder or by using Spotlight search.
  2. Create a new workflow: When Automator opens, select “New Document” and then choose “Workflow. “
  3. Add the “Scale Images” action: In the search bar at the top of the Automator window, type “scale images.” Drag and drop the “Scale Images” action into the workflow area.
  4. Configure the action: In the action settings, you can specify your desired output size.

    You can also choose whether to replace the original files or create copies of them.

  5. Run the workflow: Click on “File” in the top menu bar and choose “Save.” Give your workflow a name and select a location to save it. To resize your images, simply double-click on the saved workflow file and follow any prompts that appear.

Method 3: Using an Online Tool

If you prefer not to install additional software on your Mac, there are several online tools available for resizing JPEG images. One popular option is PicResize. Here’s how it works:

  1. Visit PicResize: Open your favorite web browser and go to
  2. Select your image: Click on “Browse” or drag and drop your JPEG image onto the designated area on the website.
  3. Choose your resizing options: PicResize allows you to specify custom dimensions or select from predefined sizes. You can also apply additional effects if desired.
  4. Start resizing: Once you have configured everything to your liking, click on “Continue” or “Resize Image.

  5. Download the resized image: After the resizing process is complete, you will be presented with a preview of your resized image. Click on “Save to Disk” to download it to your Mac.

That’s it! You now have multiple methods at your disposal for resizing JPEG images on your Mac. Choose the one that suits your needs best and start optimizing your image collection today.

Remember, resizing JPEG images can help you save space, improve loading times, and make sharing easier. Happy resizing!

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