DevToolKit

HTML Formatter

Prettify or minify HTML5 code instantly. Supports nested CSS/JS formatting, custom indentation, comment stripping, and real-time validation with syntax highlighting.

Beautify Mode
Tags:11
Attr:4
JS:1
CSS:1
Comments:1

Format Settings

80ch
Remove whitespace
Remove <!-- -->
Keep body/head indented
Smart Formatter

This tool uses js-beautify to correctly indent nested CSS and JavaScript blocks within your HTML.

Formatted Output
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>DevToolkit Example</title>
    <style>
      body {
        background: #fafafa;
        font-family: Inter, sans-serif;
      }

      .card {
        padding: 2rem;
        border-radius: 12px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      }
    </style>
  </head>
  <body>
    <!-- Main content area -->
    <div class="card">
      <h1>Welcome to DevToolkit</h1>
      <p>The high-performance tool collection for modern developers.</p>
      <button onclick="alert('Hello!')">Click Me</button>
    </div>
    <script>
      function init() {
        console.log("DevToolkit initialized");
      }
      window.onload = init;
    </script>
  </body>
</html>
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How to Use

Cleaning and optimizing your HTML markup is effortless with our professional editor:

Step-by-Step Guide

  1. Paste Source: Enter your unformatted HTML5 code into the RAW HTML input box on the left.
  2. Customize Layout: Use the sidebar to set your preferred Indentation and Max Line Length.
  3. Target Optimization: Toggle Minify HTML if you need a compact version for production use.
  4. Observe Feedback: Watch the Statistics Ribbon update instantly with tag and script counts.
  5. Copy & Deploy: Use the copy icon or download button to get your clean, optimized HTML code.

About This Tool

Modern HTML Engineering

Unlike basic formatters that treat HTML as simple text, our utility uses a full structural parser. This ensures that nested logic remains intact and that sensitive elements like <script> and <style> are formatted using their own specific language rules, providing a cohesive and professional output every time.

Why Use This Tool

Why use our tool?

Privacy and speed are baked into our architecture. Most online beautifiers transmit your code to a remote server for processing. Our HTML Formatter runs 100% client-side, meaning your proprietary markup, internal scripts, and sensitive data never leave your local machine.

FAQ

Does this tool format CSS and JavaScript inside HTML?
Yes. Our formatter identifies <style> and <script> blocks and applies language-specific formatting rules to ensure your entire document is clean and consistent.
What is the difference between beautifying and minifying?
Beautifying adds indentation and line breaks to make code human-readable. Minifying removes all unnecessary whitespace and comments to reduce file size for faster web performance.
Can I strip comments from my HTML?
Yes. Toggle the 'Strip Comments' option in the sidebar to automatically remove all <!-- comments --> from your output.
Is my HTML code safe?
Absolutely. Like all DevToolkit utilities, the HTML Formatter runs 100% client-side in your browser. Your code is never sent to our servers.
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