I'm sure everyone has encountered a web page where it takes forever for the images to appear, and you sit there staring at a blank screen. There are things you can do to make sure that does not happen to visitors to your web pages. One trick that helps is to specify the sizes of the images on your web pages. That way, the user's browser can reserve the appropriate spaces for the images and can go ahead and load the text of the page.
Visitors can at least have something to read while they wait for the images to finish loading.
In order to specify the size of an image, you'll first have to figure out what the image dimensions are. Your computer monitor is also measured in pixels - the most common size or resolution is 640x480 pixels. A pixel is about the size of a period on your browser. There are probably lots of ways to figure out how big an image is. Go to the View menu at the top of the browser, and click on Document Info.