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Difference Between Image Resizing and
Resampling in Photoshop
Written by Steve Patterson. When changing the size of an image in Photoshop, there's really two
ways to go about it. You can either resize the image, or you can resample it. A lot of people use
the terms resizing and resampling as if they mean the same thing, but they don't. There's an
important difference between the two.
As we'll see in this tutorial, the difference, as important as it is, is controlled by nothing more
than a single checkbox option at the bottom of the Image Size dialog box.
As I just mentioned, the choice of resizing or resampling your image is handled by the Image
Size dialog box, which can be found under the Image menu at the top of the screen. The
difference between resizing and resampling has to do with whether or not you're changing the
number of pixels in the image, or as Photoshop calls it, changing the pixel dimensions of the
image. If you're keeping the number of pixels in the image the same and simply changing the
size at which the image will print, or in Photoshop terminology, changing the document size of
the image, that's known as resizing. If, on the other hand, you are physically changing the
number of pixels in the image, that's called resampling.
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Again, just to make sure we're on the same page so far:
Image Resizing: Changing the size the image will print without changing the number of
pixels in the image.
Image Resampling: Changing the number of pixels in the image.
See? You already know enough so that the...