tidy

Clean up and pretty print HTML, XHTML and XML files. Note: tidy cannot preserve original indentation. More information: https://api.html-tidy.org/tidy/tidylib_api_5.2.0/tidy_cmd.html.

• 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