On the right side of the window, click the box that states inches and select your desired unit of measurement.

Stepsīefore altering the image, make a copy of the original file as this process is permanent. The resolution of the image can also be determined. Follow these steps to change the dimensions and/or resolution of an image file using macOS. Often when formatting options are limited, an image may have to be exactly the right size for a webpage, blog, or profile.Īn image can be scaled by percentage, pixels, or physical measurement (inches/cm/mm). How do I change the dimensions of an image for macOS? SolutionĬhanging the dimensions of an image can be very important.