Image files with the word “calendar” in their names, “Size” column gives some indication of relative size but not actual dimension. This is List View, and it’s not very helpful when it comes to showing actual dimensions, although the “Size” column does give us an idea of which image files might be the higher-resolution ones and which might be the lower-res ones. The picture below shows the results of a search for image files with the word “calendar” in their names. Show the pixel dimensions of images in the Finder’s Icon View What you really need is a way to look at an image’s icon in a Finder window and know what its dimensions are without opening it. But that takes a bit of time and all that opening and closing becomes tedious, especially if you don’t find what you want on the first try. Of course you can open up an image in Preview, or Pixelmator, or Photoshop, and find the image size via the app’s menus. This leads to a need for multiple copies of some images– one saved at high resolution, another saved at low resolution (and maybe others in between).
Sometimes you want an image with many pixels, either because you want it to take up a lot of screen space or because you want it to print well, and sometimes you want an image with not very many pixels, because you want the image to load quickly on a web page or to be transferable via email. When working with images it’s important to know their dimensions (how many pixels horizontally and how many pixels vertically, 640 x 480 for example).
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