beautify HTML online – Clean & Format HTML Instantly
🧹 Open HTML Formatter Tool
Use beautify HTML online instantly – beautify, minify, or validate your HTML code.
HTML beautification (or pretty‑printing) adds consistent indentation, line breaks, and spacing to raw HTML. This makes the code easier to read, debug, and maintain.
Our tool uses a fast, client‑side parser – your HTML never leaves your browser.
Why beautify HTML?
- ✅ Improves readability for teams
- ✅ Simplifies debugging (matching tags)
- ✅ Makes code review easier
- ✅ Reduces cognitive load
How it works
The beautifier parses your HTML, builds a DOM tree, then outputs it with proper indentation (2 or 4 spaces, or tabs).
<!-- Before -->
<div><p>Hello</p></div>
<!-- After -->
<div>
<p>Hello</p>
</div>Code Examples
Beautify HTML in C# (using AngleSharp)
using AngleSharp.Html.Parser;
var parser = new HtmlParser();
var document = parser.ParseDocument(messyHtml);
var prettyHtml = document.DocumentElement.OuterHtml;Frequently Asked Questions
Does beautification change HTML behavior?
No – only whitespace is added. The rendered output stays identical.
Can I set custom indentation?
Yes, our tool lets you choose spaces or tabs, and the number of spaces.