GIFs in Web Pages

In the past equations generally had to be converted to pictures to put them on the web, this has a number of serious drawbacks:

• You have to manage a number of image (GIF or PNG) files as well as the HTML page they belong to,
• The pages look terrible when printed out,
• The font size for expressions is fixed,
• There is no effective answer for people who can't see the images,
• The expressions can't be moved to a mathematical manipulation package.