Need help on tidy command

[Anilkummari]

Hi,
I want to know the backend "tidy command" when i click on tidy on https://htmltidy.net/ website. I'm getting the desired output on the GUI page, but when i try to use "tidy input.html > output.html" on the cmd i see a different version of html. Tried digging tidy --help ,none of the options worked out
Thanks in advance.

[grstatdoc-gr]

I am wanting to clean up HTML 4.0 code into HTML5...
(example confstat.html)
I found and downloaded tidy-5.8.0, but when I run it, I get basically a blank screen:

So, I'm not sure if I'm to open a command prompt, navigate to the tidy 5.8.0 to run it, or what.