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How to Resize Photos on Mac: A Comprehensive Guide

Resize Photos on Mac: Easy Steps to Learn

In today’s digital age, resizing photos has become an essential skill. Whether for posting on social media 📸, sharing with friends, or saving space on your device, it’s a task you’ll likely need to do often. If you’re a Mac user, you’re in luck 🍀. This guide will take you through the process of resizing photos on a Mac, both manually and using quick actions for automation.⁣ This guide is all you need to handle your photos like a pro 😎.⁣


Manually Resize Photos

Begin by selecting all the photos 🖼️ that you wish to resize in the preview. Click on Tools in the menu, and select Adjust Size. Here, you have the flexibility to set a custom size, or you can use Apple’s preset sizes 👍. You can also swap measurements between pixels and percentages, depending on your preference. After adjusting size settings to your liking, click OK, and voilà! Your pictures are ready in their new avatar. If you change your mind, remember, you can always press command Z to undo the changes and save your work by hitting the File option and selecting Save 😊.


Automate Photo Resizing with Quick Actions

If you handle numerous photos or frequently resize them, automate the process with Quick Actions 🚀. Launch the Automator app, select Quick Actions from the options and hit Choose. Next, pick Photos from the library. Drag the Scale Images option to the workflow window, which will prompt a warning message reminding you that the action will modify the original file 📝. Opt to create a copy to preserve your originals. Decide where you want new photos to be saved. Finally, set your new size in pixels or percentages, and hit Save. Your workflow is now set up and ready to speed up your photo resizing process 💨.


Running the Automation

After creating your workflow, it’s time to let it work its magic ✨. Select all the photos and right-click to find your new resize photo quick action in the drop-down menu. Run the automation and watch as your photos are seamlessly resized and stored in your pre-defined destination 🎉. Checking your saved photos, you’ll find them all resized to your preset dimensions 🎈.

Conclusion: 🏁

That’s it! A full rundown on how to resize photos on a Mac, both manually and by creating a quick action to automate the process. A great skill for ensuring your pictures always fit the bill, whether it’s for an Instagram post or an important presentation 👍. With this simple guide, you’re well-equipped to handle your pictures like a professional photographer 📸. Master these steps, and you’ll be resizing photos in a snap! 🚀


You can use built-in software like Preview or Photos, as well as third-party applications like Adobe Photoshop, GIMP, or online tools like Canva.

Open the photo with Preview, click on ‘Tools’ in the menu bar, then select ‘Adjust Size’. Enter your desired dimensions or percentage and click OK.

You can use Automator, a built-in application on Mac, to resize multiple images at once.

You can resize most of the common image formats, including JPEG, PNG, TIFF, and Gif, among others.

Yes, you can maintain image quality by using a high resolution or the right file format like PNG-24 or JPEG-2000.

There is no standard photo size on a Mac. However, the dimensions of the photo depend on your specific requirements.

It depends on your needs. For general use, 72 DPI is common. For print, 300 DPI is recommended.

The Photos app doesn’t directly resize photos. You need to export the photo and choose a size or use another app like Preview.

Not directly on Mac. However, you can use online tools that allow you to resize images without installing software.

As emails prefer smaller file sizes, it’s best to reduce both resolution and dimensions. You can use Preview or an automated software like Automator.

You can change DPI settings through the ‘Adjust Size’ option in the Preview app or in third-party applications like Adobe Photoshop or GIMP.

Resizing changes the size of the image without changing its pixel count. Resampling changes the pixel count, which may affect the image’s quality.

Yes, Adobe Photoshop is a powerful tool that can efficiently resize images on your Mac.

For best quality prints, it’s recommended to have your image at 300 DPI. The size depends on your print size, for example, for a 6×4 inch print, the image should be 1800×1200 pixels.

Yes, you can crop and resize a photo at the same time using Preview or other photo editing tools.

Third-party apps like Adobe Photoshop can help you to resize an image to a specific size by adjusting its quality and dimensions.

The large file size could be due to high resolution or lack of compression. You can reduce the size by resizing or compressing the image.

You can resize a photo without cropping it by maintaining the aspect ratio when changing the dimensions. You can do so using Preview on your Mac.

Mac’s Photos app doesn’t allow direct resizing within the library. You will need to export the image first and then resize it using Preview or another tool.

Yes, you can easily resize a screenshot using Preview, Photos App, or third-party applications on your Mac.

Yes, GIMP is a free and open source software that you can use to resize images on your Mac.

To avoid pixelation, always maintain the aspect ratio when resizing, and never increase the size of an image more than its original size.

Yes, using Preview on your Mac, you can resize images based on a percentage of their original size.

You can adjust the aspect ratio of a photo using the cropping tools in Preview, Photos App or other graphic software like Adobe Photoshop.

You can check the size of your photo by clicking on the file, and then clicking ‘Get Info’ in the File menu.

Using the ‘Custom’ option in the ‘Adjust Size’ function in Preview, you can create custom dimensions for your photo.

Yes, while resizing your photo, you can also choose to save it in a different format using ‘Save As’ or ‘Export’ function.

You can maintain the resolution by using the ‘Resample Image’ option in the ‘Adjust Size’ function in Preview.

Yes, it’s possible. You can input the exact dimensions you want in the ‘Adjust Size’ function in the Preview app.

In Photoshop, you can use the ‘Image Processor’ tool under the ‘File’ > ‘Scripts’ menu for batch resizing photos.