Description of Hindent :
Hindent is a perl utility which takes one or more HTML files and reformats them by indenting them for human readability. The new HTML code is written to standard output. If no file is specified, hindent reads from standard input. If more than one file / is specified, each is taken in turn and all output is merged. Hindent varies the amount of whitespace from the input. Multiple tags per line are broken into separate lines.