HTML Beautifier

What is an HTML Beautifier?

An HTML Beautifier takes HTML code that is minified, pasted from a log, or badly indented, and re-formats it with consistent indentation and line breaks so the tag structure is easy to read. It does not change how the page looks in a browser. It only changes the whitespace and layout of the source code, making nested elements, such as lists inside sections, visible at a glance.

How to Use This Tool

1. Paste your HTML code into the input box.
2. Choose the indentation size offered by the tool, if options are shown (2 spaces is a common choice).
3. Click Beautify or Format to produce the readable version.
4. Check that opening and closing tags still match and that attribute values are unchanged.
5. Copy the formatted HTML back into your editor.

Worked Example

Input HTML (1 line, 4 elements):

<section><h2>Offers</h2><ul><li>Save 20% on 2 items</li><li>Save 35% on 4 items</li></ul></section>

Beautified output:

<section>
  <h2>Offers</h2>
  <ul>
    <li>Save 20% on 2 items</li>
    <li>Save 35% on 4 items</li>
  </ul>
</section>

The beautifier added line breaks and indentation only. The content is unchanged: 1 heading, 1 list, and 2 list items offering 20% off 2 items and 35% off 4 items. Indentation shows that the ul is inside the section and each li is inside the ul.

Limitations

• Beautifying does not fix broken HTML. A missing closing tag stays missing; use a validator to find it.
• It does not check whether the HTML is accessible, semantic, or valid for your doctype.
• Whitespace inside pre elements and some inline content is meaningful, so aggressive re-formatting can change how that text displays.
• It does not minify, compress images, or improve page speed by itself.
• Do not paste credentials, tokens, or confidential code into any public web tool.

Frequently Asked Questions

Does beautifying change how my page looks?

No. Browsers ignore most extra whitespace between block elements, so the rendered page stays the same. Only the source code becomes easier to read.

Can it fix unclosed tags?

No. A beautifier re-indents the code you give it. If a div is not closed, it stays unclosed. Run the code through an HTML validator to find the missing tag.

What indentation should I use?

Use whatever your project uses. Two spaces is common in many codebases; four spaces is also common. Consistency across a project matters more than the exact number.

Is beautified HTML the same as minified HTML?

No, they are opposites. Beautified HTML adds whitespace for humans. Minified HTML removes whitespace for smaller file size. Use beautified code while editing and minified code for production delivery.