How to Resize an Image on Mac

• In the Preview software that comes pre-installed on your Mac, you may alter the size of practically any common picture file type.
• Enter the updated picture dimensions after opening your image in the Preview app and choosing Tools > Adjust Size.

Find out how to resize a picture on your Mac by using the Preview app or Pages. This article describes how to use the Pages and Preview applications to alter the size of a picture on a Mac.

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How to Resize an Image on Mac

On a Mac, using Preview, the built-in picture viewer, is the simplest way to resize an image. Although it’s not the best option for more intricate picture alterations, resizing may be done quickly and easily using it. Almost every common image file format, including.JPEG,.JPG,.TIFF,.PNG, etc., may be opened and edited with Preview.

1. Open the image file in Preview.
2. Select Tools from the menu bar at the top of the screen, and then select Adjust Size.
3. This will pull up the Image Dimensions menu with an assortment of different options.
4. You can change the measurement type by clicking the pulldown menu on the right, which should show pixels by default.
5. Depending on the measurement type you need or are familiar with, you can select pixels, percent, inches, cm (centimeters), mm (millimeters), or points.
6. Typing in a new value in either the Width box will change the dimensions of the image’s width, and Height will change the height.
7. If Scale proportionally is checked off you only have to change the values in one of the two boxes as the other one will change automatically to fit.
8. Click OK to finish resizing your image. If everything looks good don’t forget to save when you’re finished!

How Do I Resize a JPEG Image?

You can also use Preview to resize a JPEG image on your Mac by following the same steps as above.

1. Open the .JPEG in Preview.
2. Select Tools > Adjust Size to pull up the Image Dimensions menu.
3. Typing in a new value in the Width box will change the dimensions of the image’s width, and Height will change the height.
4. If Scale proportionally is checked off you only have to change the values in one of the two boxes as the other one will change automatically to fit.
5. Click OK to finish resizing your image.

How Do I Change the Size of an Image in Pages on Mac?

Although the options and available methods are noticeably different, resizing a picture in Pages is practically as simple as in Preview.
Select the Arrange tab from the menu column on the right-hand side after clicking the picture in your Pages document.

1. 
2. Scroll down to the Size portion of the menu.
3. Enter a new value in either the Width and Height box and press return.
4. If Constrain proportions is checked off, you only have to change the value of Width or Height (not both) to change the overall dimensions of the image.

5. You may also manually adjust the picture with your mouse or trackpad until it is the right size for the page.

6. Move your pointer to one of the little white boxes seen on any of the corners or sides of the image while it is active. A double-sided arrow instead of a single arrow should appear as the cursor.

7. Click and drag the image’s edge to enlarge or reduce it when the double-sided arrow appears.

8. The picture will automatically maintain the same proportions when it is resized if Constrain proportions is selected, so it won’t “stretch” out of proportion.