This tool beautifies and prettifies your HTML Code
HTML
Formatted HTML
Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser.
It can be assisted by technologies such as Cascading Style Sheets and scripting languages such as JavaScript.
Source: Wikipedia
What does an HTML Beautifier does ?
It will format and prettify your HTML code to make it more readable
It will improve the presentation of your HTML code by indenting lines appropriately and removing extra blank spaces
AKA:
html Beautifier, code beautifier, format html code, prettify html