Beautify messy or minified HTML with consistent indentation.
Reformat HTML so nested elements are indented and easy to follow. Inline scripts and styles are formatted too.
Minified markup like <ul><li><a href="/">Home</a></li><li>About</li></ul> becomes a nested list with each element on its own indented line, so you can see which tags are inside which.
Usually not, but extra whitespace can matter between inline elements such as links and images, and inside <pre> blocks. Check anything whitespace-sensitive after formatting.
It indents what’s there. Browsers are forgiving of missing closing tags, so fix structural problems in your source rather than relying on the formatter.