Optimizing A JPEG Image In Photoshop CS - 2
Step 3. Compare previews. Click on the 4-Up tab to view the original image and the previews for the three default compression settings. Now click on the upper right preview to make it active. You will see a thin gray border around this preview indicating that it is the active preview. At the right of the preview you will find the File Format pop-up menu. Choose JPEG from the pop-up menu. Under that is the Compression Quality pop-up menu. Choose High from this menu. Now click on the small arrow at the right to open the Optimize pop-up menu. Click on Repopulate Views in this menu. This last step will reset the three previews to your current JPEG High setting. You are now ready to compare the three previews.