How to Resize an Image in Photoshop
Resizing changes how many pixels an image has, which affects file size, print quality, and loading speed. Photoshop's Image Size dialog gives you full control. Here's how to resize correctly and preserve quality, plus a lightweight online alternative.
Open your image in Photoshop with File > Open.
Go to Image > Image Size to open the resizing dialog.
Make sure "Constrain Proportions" (the link icon) is on so the aspect ratio stays locked.
Enter your new width or height in pixels, centimeters, or a percentage.
Choose a resampling method — Bicubic for general use, Bicubic Sharper when scaling down.
Click OK, then export with File > Export > Export As.
Pro tip
For web graphics, resize down to the exact display size and keep the pixel count small. For print, set the resolution to 300 PPI before you upscale.
Frequently asked questions
Turn on "Constrain Proportions" (the chain-link icon) in the Image Size dialog so Photoshop adjusts width and height together and keeps the aspect ratio.
Resizing sometimes just changes dimensions, while resampling adds or removes pixels. In Photoshop, checking "Resample" changes the pixel count and the file size.
Yes. Pixcutly's resize tool lets you scale by percentage or exact pixels, runs locally in your browser, and handles batches in one go.
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