Skip to main content

How to resize an image

There is a seemingly endless number of tools to choose from when it comes to resizing pictures. Your Windows 10 desktop or Chromebook already has the vast majority of these handy tools, so you can edit your images quickly without paying for expensive editing software that hogs precious memory space.




15 minutes

What You Need

  • Windows 10 PC, Mac, or Chromebook

  • Windows 10, Preview in macOS, or Gallery in ChromeOS app

This guide will show you how you can resize an image using Photos in Windows 10, Preview in macOS, and Gallery in ChromeOS. In case you’re not a fan of those apps, we’ll also provide instructions for a web-based client.

Selecting Resize in Photos app.
Image used with permission by copyright holder

Windows 10

For Windows 10 PCs, we prefer to use the operating system's native Photos app. Follow the steps below to resize an image in Photos on Windows 10:

Step 1: Right-click on the image and select Open with followed by Photos.

Step 2: Select the Three dots icon located in the app’s top-right corner.

The Save Resized Copy button in the Photos app.
Image used with permission by copyright holder

Step 3: Select Resize on the drop-down menu.

Step 4: A pop-up window appears. Select one of the three preset sizes (shown on the left). Otherwise, choose Define custom dimensions for a specific size. Another pop-up window appears (shown on the right).

Step 5: To keep the aspect ratio, select the box next to Maintain aspect ratio.

As you enter a number into one of the boxes, the other box will automatically adjust its number in proportion to the number you just entered. If the aspect ratio doesn’t matter, don’t check the box, and enter the numbers in both boxes.

Step 6: Select the purple Save resized copy button.

Selecting Adjust Size in the Preview app on macOS.
Image used with permission by copyright holder


On macOS, you can use Preview to resize images. Here's how to do that:

Step 1: Right-click on the image and select Open. If Preview is not your default image viewer, select Open with followed by Preview instead.

Step 2: Select Tools on the menu bar.

Step 3: Select Adjust size on the drop-down menu.

Customizing the size of an image in Preview on macOS.
Image used with permission by copyright holder

Step 4: Enter the width and height information. You may need to switch the size type, like changing from inches to pixels, as shown above. Alternatively, you can select a preset size by selecting the arrows next to Fit into.

Step 5: Select the blue OK button to confirm the new size.

Step 6: To save the resized image, select File on the menu bar.

Step 7: Select Save.

Resizing an image in ChromeOS via the Gallery app.
Image used with permission by copyright holder


You can use ChromeOS' Gallery image viewer app to resize images. Use the steps below to resize images via Gallery:

Step 1: Right-click on the image and select Open with Gallery on the pop-up menu. Alternatively, if Gallery is not your default image viewer, select Open with followed by Gallery.

Step 2: Select the Rescale button at the top.

Step 3: Enter the width and height. Select the Chain icon to unlock the aspect ratio if needed.

Step 4: Select the blue Save button. Alternatively, select the blue Down arrow to choose Save as if you don’t want to alter the original image.

Web (Pixlr X)

Pixlr X is a free web app you can use to make simple edits to your images, including resizing them. Follow the steps below to resize an image using Pixlr X:

Step 1: Head to Pixlr X.

Step 2: Select the blue Open image button. Choose the image you want to edit.

Step 3: Find the Layout and Template button and select it. It looks like a group of three rectangles.

Selecting the Smart Resize button in Pixlr X.
screenshot/Anita George / Digital Trends

Step 4: In the Layout menu, select Smart resize.

Step 5: On the Smart resize screen that appears, you can enter in your desired width and height measurements, lock or unlock the aspect ratio with the Lock proportions toggle, or even choose from a variety of size presets.

The Smart Resize screen on Pixlr X.
screenshot/Anita George / Digital Trends

Step 6: Once you've made all your changes, select the blue Apply button.

Step 7: Find the blue Save button at the bottom and click it.

Step 8: Enter the file name, select your preferred file type, and adjust quality as needed. Once everything is as you want it, select the blue Save button.

Your edited image should be saved to your Downloads folder. There is a daily limit of three free saves.

Editors' Recommendations

Kevin Parrish
Former Digital Trends Contributor
Kevin started taking PCs apart in the 90s when Quake was on the way and his PC lacked the required components. Since then…
The best Windows 10 keyboard shortcuts
Close up of Microsoft Surface Pro 6 keyboard.

Keyboard shortcuts can speed up even the most mundane of Windows 10 tasks. Learning the best of them can make your PC experience faster, more efficient, and, in some cases, even more enjoyable.

These are the essential Windows 10 shortcuts that can make you feel more like a PC wizard. A master of the keys, so to speak.

Read more
How to sync your Outlook calendar with an iPhone
Series of three smartphones showing Outlook on mobile.

Many different businesses use Outlook as a way to organize everything from meetings to their employees’ daily tasks. Of course, you can also use Outlook in your personal life as well.

Read more
This dangerous new Mac malware steals your credit card info
A hacker typing on an Apple MacBook laptop while holding a phone. Both devices show code on their screens.

People like to think that Apple’s Macs are more or less invulnerable to the assorted viruses and trojans that afflict Windows PCs, but that’s far from the truth. That’s just been aptly demonstrated by the emergence of a new malware strain that attempts to steal all of your passwords, credit card data, and more.

The discovery was made by security firm SentinelOne, which named the malware MetaStealer. According to SentinelOne, MetaStealer has the potential to trick you into giving away vital information that could cause a huge amount of damage, and it has a nefarious way of getting what it wants.

Read more