how to reduce the memory size of an image
To reduce the file size of your picture and delete the cropped parts of the picture from the file, under Picture Tools, on the Format tab, in the Adjust group, click Compress Pictures. If you want to keep the cropped parts, you can change the automatic setting.elect the picture that you want to crop. Under Picture Tools, on the Format tab, in the Size group, click Crop. Note If you do not see the Picture Tools and Format tabs, make sure that you selected a picture. You may have to double-click the picture to select it and open the Format tab.