How to lower file size to 3MB in Photoshop?

I need to upload some art on a website for school, but the size limit is 3MB.


How can i lessen the size of an image using Adobe Photoshop CS2?How to lower file size to 3MB in Photoshop?
Go under ';Image'; and click ';Image Size';





Check the ';Constrain Proportions'; box.


Use the up and down arrow keys to choose the size.


At the very top of the window it should say the size of the image.


Just keep using the down arrows until the image size gets to a 3M.