Use Height and Width Attributes
Be sure to include the height and width of your image in the image tag.
The height and width attributes give information to the browser about the size of your graphic. They are part of the image tag:
<img src="../images/heightwidth/palette.gif" width="160" height="160">
Height and width attributes are usually automatically inserted in the HTML code by WYSIWYG page editors. In programs like Homesite, you have option of inserting the size when you use the "insert image tag" feature. If you code strictly by hand, you can find the image height and width in your image editing program.
Using height and width attributes means:
Don't use the height and width attributes to make a graphic appear smaller on the page than it's actual size; this just creates a larger download time plus added computer processing time. Resize the graphic in your image editing software instead and use it in your page at its true size.