tidy
Clean up and pretty print HTML, XHTML and XML files.
TLDR
Pretty print an HTML file
$ tidy [path/to/file.html]
Enable [i]ndentation, [w]rapping lines in 100, saving to output.html
$ tidy --indent y --wrap 100 -output [path/to/output.html] [path/to/file.html]
Modify an HTML file in-place using a configuration file
$ tidy -config [path/to/configuration] -modify [path/to/file.html]
