HTML Formatter, Beautifier & Minifier

Format, beautify, and minify HTML. Auto-indent nested elements and collapse attributes. 100% client-side.

Free Always No Account Needed 100% Client-Side

Input HTML

230 bytes

Output

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>
      Example
    </title>
  </head>
  <body>
    <div class="container">
      <h1>
        Hello World
      </h1>
      <p>
        This is a paragraph with some
        <strong>
          bold text
        </strong>
        .
      </p>
    </div>
  </body>
</html>

About this tool

Well-formatted HTML is easier to read, debug, and maintain. Minified HTML loads faster. This tool handles both.

HTML Beautifier — adds proper indentation to nested HTML elements, formats attribute lists, and normalizes whitespace. Turn a single-line HTML dump from an HTTP response into readable, indented markup.

HTML Minifier — removes comments, redundant whitespace, and optional tags to reduce file size. Typical compression: 10-30% smaller. Options include: - Remove comments - Collapse whitespace - Remove optional closing tags - Minify inline CSS and JavaScript

Supports HTML5, including custom elements, web components, and modern attributes like loading="lazy" and fetchpriority.

Frequently Asked Questions

Does HTML minification break my page?

Standard minification (whitespace removal, comment removal) is safe. Removing optional tags or attribute quotes can occasionally cause issues — test after minifying.

How much does HTML minification reduce file size?

Typically 10-30% for hand-written HTML, more for machine-generated HTML with lots of whitespace.

Can I format just a snippet, not a full HTML page?

Yes. Paste any HTML fragment — a table, a form, a component — and it will be formatted correctly.

Does it validate HTML?

Basic validation (tag matching) is performed. For full HTML5 validation, use the W3C Validator.

Related Tools

CSS Minifier

Minify or beautify CSS. Remove comments, collapse whitespace, shorten values. Shows compression percentage saved.

JS Minifier

Minify or beautify JavaScript. Shorten variable names, remove whitespace, and show compression savings.

XML Formatter

Format and validate XML with syntax highlighting. Convert XML to JSON and JSON to XML. 100% client-side.

Meta Tag Generator

Generate SEO meta tags, Open Graph, and Twitter Card tags. Preview how your page looks in Google and social media.