After you launch Irfanview go File->Open and find/open the image you want...it will then be displayed. Then just go Image->Resize/Resample and tell it what dimensions you want the new image to have. Note that by default it will make i proportional to the original, so if you want it custom you'll have to uncheck the box next to "Preserve aspect ratio." Also note that it doesn't automatically save the changes, so make sure you save the resized image when done. (I'd save it as a separate image to preserve the original.)
Hope this helps,
ok i just downloaded irfanview and now im and super confused.... how do i put the pics on it so i can make the jpeg's smaller?
wow please help me,