Imageready Window Speed Tip
If you’re using Adobe ImageReady (which comes installed with Photoshop as part of the package), by default the image window displays the original (un-optimized version) of your image. However, if you want to quickly view the optimized version, a 2-Up version (original and optimized side by side), or the 4-Up version (your original and three other optimized options), you can use the quick tip Command-Y (PC: Control-Y) to rotate through your four view choices. A big time saver.