Images can really make page size large, so you should be especially careful about the size of all images.
For example, a 50 KB image file is not very big in most circumstances: on the Web, that same image will take most people around 25 seconds to download! In general, the maximum acceptable page loading time (in good circumstances over a modem) is around 15 seconds, so most pages should be about 30 KB or smaller in total (including the HTML file and all images).
You can help reduce download size by:
- Using fewer images
- Re-using images on different pages (if you use the same image file, the browser will only have to load it once)
- Making sure the images are in the appropriate file format and are compressed as much as possible
