HTML Beautifier & Minifier

Format, beautify, and minify HTML code with custom indentation and live preview. 100% client-side — no data leaves your browser.

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About HTML Formatting & Beautification

HTML (HyperText Markup Language) is the foundation of every web page. Well-formatted HTML is easier to read, debug, and maintain. Whether you are inspecting a minified production page, cleaning up generated markup, or preparing code for a code review, proper formatting makes a significant difference.

HTML Beautifier / Formatter

The beautifier parses your HTML and applies consistent indentation, inserting newlines between block-level elements and properly nesting child elements. It handles self-closing tags (<br/>, <img/>, <input/>), preserves content inside <pre>, <script>, and <style> blocks, and respects inline elements. Choose between 2 spaces, 4 spaces, or tab indentation to match your project's coding standards.

HTML Minifier

The minifier strips unnecessary whitespace between tags, removes HTML comments, and collapses multiple spaces into single spaces within text content. This produces the most compact representation of your HTML, which is useful for reducing page weight, optimizing delivery, and preparing markup for production environments.

Live Preview

The live preview renders your HTML output in a sandboxed iframe, letting you instantly see how the formatted or minified markup looks in a browser. This is helpful for verifying that formatting changes do not alter the visual output of your page.

Clean HTML Best Practices

  • Use consistent indentation (2 or 4 spaces) throughout your project
  • Close all tags properly, even optional closing tags like </li> and </p>
  • Use lowercase for tag names and attributes
  • Quote all attribute values with double quotes
  • Keep nesting levels shallow where possible for readability
  • Remove commented-out code before committing to version control

100% Client-Side Processing

This HTML beautifier runs entirely in your browser using JavaScript. No data is transmitted to any server. Your HTML never leaves your device, making it safe to format sensitive templates, email markup, and private code.