How to Change Resolution in Photoshop

Co-authored by wikiHow Staff

You can change the resolution of an image in Photoshop by clicking the Image menu → clicking Image Size → making adjustments to the height or width to the “Pixel Dimensions” fields. Use the resample settings to adjust for changes to the image size or for printing.

Steps

1
Click the File menu.
2
Click Open.
- You can also access this menu item by hitting Ctrl+O (Windows) or ⌘ Cmd+O (Mac).
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3
Double-click an image file you wish to open.
4
Click the Image menu.
5
Click Image Size.
6
Enter a width or height amount. Use the size listed under “Pixel Dimensions”.
- The other dimension will auto adjust to maintain the same aspect ratio. If you do not want this to happen, deselect the Constrain proportions checkbox.
- You can use the dropdown menu next to each size field to change dimension measurements (ie inches instead of pixels).
7
Choose a resampler setting. Resampling resizes an image while maintaining the same number of pixels.^{[1]
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- “Bicubic Sharper” is best for making images smaller; “Bicubic Smoother” is better for making images larger.
- You can deselect the Resample Image checkbox if you are just trying to change the image size for printing purposes. In this case you will need to make height/width adjustments to the size fields listed under “Document Size”. Making images larger with this enabled will result in loss of image quality.^{[2]
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8
Click OK. The sizing changes will be applied.
- If you wish to keep these changes to the file, select Save from the File menu.