Not to say, no one can deny the fact that mac app icons are simply gorgeous. Every app icons in a Mac comes with scalable resolution of 1024 x 1024. In addition to this, developers usually include several smaller sizes that would help operating system to shrink or enlarge the icon properly in various finder views, minimizing and maximizing items. You may want the image of app icons now and then for your various needs, such as app reviews, blog posts or you simply need it for preparing an app tutorial. We all know that capturing Screenshot & then cropping it will not provide high-resolution images of icons. The good news is you can actually find and extract the icon images from the application itself. There may be some dedicated apps available for same purpose. But why you should have to squander money for it while you can actually extract icon images using the inbuilt OS X tools or apps.
Methods for extracting high-resolution icon images from OS X apps
Usually you can find the respective icon image from the resource folder of an app. To find it, just navigate to application folder in your Mac, then right click the icon and select show package contents. Once you are in the content folder, open the resource folder and locate the ‘.icns file’. Then you can copy it to anywhere you want.
Unlike in Windows, extracting app icon images from Mac OS X is dead easy. Thanks to inbuilt preview app, which is wise enough to pull out just the icon image instead copying the app itself. All you have to do just right click the icon file and open it with preview app or just drag it on the preview app icon.
When you do, you would be able to see the preview of app icon image in full resolution along with various sizes. Usually, there you could find app icon image in various sizes, which include 16 x 16, 32 x 32, 64 x 64, 128 x 128, 256 x 256, 512 x 512 and 1024 x 1024 pixels. Then choose the suitable size, go to File menu > click Export. From the export dialog box, you can export as PNG, JPEG, TIFF, ICNS or PDF.
Alternatively, there is an easier way to find and extract the image from the icon file. Instead going through application folder to find the icon file, you could simply select the app icon and hit ⌘+I keys simultaneously to bring up ‘Get info’ dialog box, where you can find the icon image on top left end corner. Now click once on the image and copy the image to clipboard using ⌘ +C shortcut keys or go to Edit > Copy from top menu on the screen. Then start the preview app, go to File > New from Clipboard. Once it is imported from the clipboard, just select the suitable icon size from the left pane of the window and export it.
Hope that, without the help of any extraction software, you would be able to extract the icon images using above methods.