OS X Finder does sometimes, but not always, show the dimensions of an image selected in Finder, in the sidebar. Why? Is there a way to force it to always show the dimensions? It seems very arbitrary when it decides to show and not to show.

Note: this folder is on a local drive - the default Macintosh HD.

enter image description here

  • 1
    This is still buggy in current OS X (Yosemite 10.10.3). I should not that Finder mostly does not show the dimensions when the file is located on a network drive, or if local, resides in a folder which is part of some kind of "package" - I guess Finder assumes that file that are in packages are compressed or something and won't use resources to get such info to the user.
    – Jonny
    Apr 15, 2015 at 2:19

2 Answers 2


You might need to re-index the directories on your system by doing the following:

  1. Go to Apple > System Preferences > Spotlight and chose the Privacy tab.
  2. Drag a directory (or an entire volume) into the list, and confirm the action
  3. Remove the directory (or volume) from the list via - it, which will trigger a re-index of the directory or volume.



Here is what worked for me in OS X 10.10.3

  1. Open all the images in Preview.app at the same time; drag them all to Preview.app

  2. With the Preview.app Thumbnails Sidebar (alt command 2) and the Preview.app Inspector window open (command i) use the arrow keys (up/down) to view through all of the images. Each one should be open long enough for you to see the images dimensions in the Inspector window.

  3. Close Preview.app and now the Finder Preview sidebar will now show the image dimensions.

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