The HTML::Clean module encapsulates a number of common techniques for
minimizing the size of HTML files. You can typically save between 10% and
50% of the size of a HTML file using these methods. It provides the
following features:
Remove unneeded whitespace (beginning of line, etc.)
Remove unneeded META elements
Remove HTML comments (except for styles, javascript and SSI)
Replace tags with equivilant shorter tags (<strong> --> <b>, etc.)