Using percentage is also good for incremental amounts. Pixels is a useful measurement if you’re creating screen graphics, whereas inches or centimeters is easier to understand for print work. You can specify a new canvas size using a variety of measurements. In the Canvas Size dialog box you’ll see the dimensions of your current canvas. To get started open your image and choose Image > Canvas Size, or press Cmd+Opt+C (Ctrl+Alt+C on Windows). You may need to change the canvas size to crop or extend the canvas of your image to work on specific areas of the image. When you scan a photo or import a digital image, the canvas size is automatically set to the edge of the image.

When you create a new document, you can specify the size of your canvas. You generally want to keep the width and height constrained to the same ratio so the image resembles its original appearance.įinally, enter a resolution value and click OK. Leave the Constrain Proportions check box selected, or you will introduce distortion. Bicubic Automatic is the most common method, but you may have special circumstances. Choose the method to Resample Image that is most appropriate for your image. Be sure to select the Resample Image option if you want to change the pixel dimensions. Then, set the Document Size to measure in inches. The most common choices are percent, inches, or centimeters, because most users easily understand these units of measure. You can modify the print size based on percent, inches, centimeters, millimeters, points, picas or columns. You can also modify the print size, which is the size of the image when printed.

How to change sizes in photoshop