Photoshop Quick Tip: Displaying Image Size Information in Photoshop

Rather than choosing Image > Image Size to open the Image size dialog box, a really quick way to find out Image size information in Photoshop is to press Alt (Windows) or Option (Mac) and then Click and hold down the mouse button over the file information box at the bottom of the document window.

A little box appears telling you, the width and height of the image (in pixels AND in the currently selected unit of measurement), the number of channels and the image resolution. Rapid!