HTML Beautifier & Minifier

About this html beautifier

Formatting HTML can be tedious and error-prone when done manually. Our free HTML beautifier transforms messy, unreadable HTML code into clean, properly indented markup—making it easier to understand, maintain, and debug. Whether you're working with frontend frameworks, template engines like Handlebars and Twig, or plain HTML files, this HTML formatter automatically improves code readability with consistent indentation and proper line breaks.

Beyond basic HTML beautification, our tool goes further than typical HTML formatters by providing built-in accessibility hints and SEO suggestions. As you format your HTML, the beautifier automatically identifies accessibility issues (missing alt text, semantic HTML improvements) and SEO problems (duplicate meta tags, missing descriptions) to help you build better, more discoverable web pages. This makes it invaluable for developers, designers, and SEO professionals who need HTML optimization in their workflow.

The minifier side of this HTML tool is equally powerful—compress your HTML code to reduce file size, improve page load times, and save bandwidth. Toggle between beautify and minify modes to either make your code human-readable during development or production-ready for deployment. Our HTML minifier removes unnecessary whitespace, comments, and redundant attributes while maintaining functionality, helping you achieve smaller HTML file sizes without losing important structure or functionality.

Advanced features like attribute sorting, template engine support (Handlebars, Twig, Vue, React), and intelligent whitespace handling set this HTML formatter apart from basic online tools. Format HTML from various sources—pasted code, files, or URLs—and instantly see a11y hints and SEO recommendations. All processing happens locally in your browser, so your HTML code never leaves your device, ensuring complete privacy and security for proprietary or sensitive markup.

How to use this tool

1. 01

   Paste Your HTML Code

   Enter or paste your HTML code into the input area. You can also load HTML from a file or URL. The tool supports any valid HTML markup, including code from template engines like Handlebars, Twig, Vue, and React JSX.

2. 02

   Choose Format Options

   Select your preferred indentation style (spaces or tabs), line width, and toggle additional features like attribute sorting, template support, and accessibility/SEO hint checking. Enable minify mode if you want to compress the HTML instead of beautifying it.

3. 03

   Review & Act on Suggestions

   View your formatted HTML with inline accessibility hints and SEO suggestions. Address any flagged issues like missing alt attributes, semantic HTML improvements, or duplicate meta tags to improve both user experience and search engine visibility.

4. 04

   Copy & Use Your HTML

   Copy the beautified or minified HTML to your clipboard and paste it into your project. Download the formatted file if needed, or integrate the tool into your development workflow with the API.

Worked examples

<div><h1>Title</h1><p>Content here</p></div>

<div>
  <h1>Title</h1>
  <p>Content here</p>
</div>

<div>
  <h1>Title</h1>
  <p>Content here</p>
</div>

<div><h1>Title</h1><p>Content here</p></div>

<img src='logo.png'><button type='button'>Click me</button>

⚠️ Missing alt attribute on image
✓ Semantic button element correctly used

Limits and edge cases

• All HTML formatting and minification happens locally in your browser—your code is never sent to a server, ensuring complete privacy for proprietary or sensitive markup.
• Accessibility hints and SEO suggestions are automatically generated as you format, helping you build more inclusive and discoverable web pages without additional tools.
• The beautifier intelligently handles template syntax from Handlebars, Twig, Vue, React, and other popular frameworks, preserving template logic while formatting surrounding HTML.

Standards and references