[header] How to compress photo files with microsoft office picture manager [title] Open the picture you would like to compress by viewing it with microsoft photo gallery. [step] Go to file, and select make a copy. ( this allows you to keep your original photo's resolution intact in case you would want to edit it or print it later. 
) rename the file so it is easier to distinguish between the original large file and the compressed version. Click save, then close the original file.