For printing, the resolution refers to how finely detailed the image is. The greater the resolution, the more pixels per inch (ppi) are measured. Similarly, the higher the number of knots per inch, the better the quality of cotton sheets or handmade carpets.

Printed wall graphics translate pixels into dots when printing (ppi). Image size is defined by the number of pixels on a file’s width and height. The pixel dimensions of a photograph are measured in megabytes. Our image will be printed larger or smaller based on the document size of the image.

It is also true that a file’s physical dimensions change as its resolution changes. Files can be viewed as flexible balls of data: rolled up tight, they have a high resolution (pixel density) but a low size (linear). A flat image’s resolution (density of pixels) is lower, but its (linear) size is larger. Its just like pastry!

Changing the size of an image does not change the number of pixels in that image. By resampling an image, the number of pixels is changed. During Photoshop resampling, the colour values of existing pixels are used to assign color values to new pixels.