How big is a Full-page web page background?

Question

I need to make a new background, and I need to know how large it is. It is a full-page one :D

Answer 1

If the image is a tileable image, it does not have to be big.  In fact, depending on the design of the background image, it could just be a small sliver that is tiled.

If it is a non-tileable image, I would stick to making the background 800x600 pixels.  You can't just make a full page one as different monitors may be set to different resolution and your image may overfill or underfill the page when viewed on them.

There are certain tricks in CSS to get a smaller image to fill a full page regardless of browser window size.

Ron

Answer 2

Most backgrounds use  "repeat" approach so the pattern can be stretched to cover any size background (which you need to do to accomodate for different sized monitors).