Description:

When editing HTML it's easy to make mistakes. Wouldn't it be nice if there was
a simple way to fix these mistakes automatically and tidy up sloppy editing
into nicely layed out markup? Well now there is! Dave Raggett's HTML TIDY is a
free utility for doing just that. It also works great on the atrociously hard
to read markup generated by specialized HTML editors and conversion tools, and
can help you identify where you need to pay further attention on making your
pages more accessible to people with disabilities.

Tidy is able to fix up a wide range of problems and to bring to your attention
things that you need to work on yourself. Each item found is listed with the
line number and column so that you can see where the problem lies in your
markup. Tidy won't generate a cleaned up version when there are problems that
it can't be sure of how to handle. These are logged as "errors" rather than
"warnings".