Free HTML Prettifier - Format and Beautify HTML Online

Format messy HTML with proper indentation and line breaks. Improve readability for debugging, code review, or learning. Choose 2 or 4 spaces or tabs. No signup. All processing happens in your browser.

HTML Formatter

Indent
0 bytes
Paste or type code to format or minify.

What is HTML Prettifying and Why Use It

HTML prettifying reformats compressed or minified HTML into readable code with consistent indentation, line breaks, and structure. Nested tags are visually aligned so you can quickly scan and understand the document hierarchy.

Use it when debugging layout issues, reviewing templates, learning HTML structure, or preparing code for version control. Readable HTML is easier to maintain and collaborate on. Our tool preserves your markup while improving presentation.

Who Uses HTML Prettifier and Common Use Cases

🔧 Frontend developers

Beautify minified HTML from production builds or third-party scripts. Inspect structure before modifying. Format templates for clearer diffs in Git. Debug layout and nesting issues faster.

📄 Content and templates

Format HTML exported from CMS or email builders. Make embedded snippets readable before pasting into docs. Clean up copy-pasted markup from browsers or tools. Ensure consistent indentation.

🎓 Learning and teaching

Turn minified or compressed HTML into readable examples. Study document structure and nesting. Share formatted code in tutorials or documentation. Understand how frameworks output HTML.

How to Use the HTML Prettifier Step by Step

1️⃣ Paste your HTML

Paste minified, compressed, or messy HTML into the input area. You can paste from a file, browser DevTools, or any source. The result updates in real time as you type.

2️⃣ Choose indentation

Select 2 spaces, 4 spaces, or tabs for indentation. Match your project style or personal preference. The output reflects your choice immediately.

3️⃣ Copy or download

Use Copy to paste the formatted HTML into your editor or CMS. Use Download to save as a .html file. Swap to move output back to input for further edits.

Tips for HTML Prettifying

💡 Match team conventions

Use the same indentation (2 vs 4 spaces or tabs) as your project. Consistent formatting makes code reviews and merges smoother.

⚡ Inline elements stay compact

Our prettifier keeps inline tags like span, strong, and a on single lines when appropriate. Block elements get proper nesting for clarity.

🔒 Your HTML stays private

All formatting happens in your browser. Nothing is sent to any server. Use it for sensitive templates or proprietary markup.

Why Use Our HTML Prettifier

🚀 Real-time formatting

See formatted HTML as you paste or type. No submit button. Instant feedback. Copy, download, or swap with one click.

📐 Smart indentation

Proper nesting for block elements. Inline tags stay readable. Self-closing tags handled correctly. Choose spaces or tabs.

🔒 Private and free

Your HTML never leaves your device. No signup, no limits, no paid features. Works offline after first load.

HTML Prettifier: Free, Fast and Ready to Use

Our HTML prettifier is free, requires no account, and works on all devices. Your markup stays private. Format minified HTML for debugging, learning, or version control. No setup, no hassle.

Try it now. Paste your HTML and get instant formatting. Copy or download the result. Works with any valid HTML - from snippets to full pages.

Frequently Asked Questions about HTML Prettifier

Is the HTML prettifier free?

Yes. The HTML prettifier is completely free. No signup, no limits, no paid features.

Does it change my HTML?

No. We only add indentation, line breaks, and whitespace for readability. Your markup, attributes, and content stay unchanged.

What indentation options are available?

You can choose 2 spaces, 4 spaces, or tabs. Select the option that matches your project or team style.

Is my HTML sent to a server?

No. All formatting happens in your browser. Your HTML never leaves your device. Nothing is stored or transmitted.

Can I prettify invalid HTML?

The tool works best with well-formed HTML. Malformed markup may not indent correctly. Fix critical syntax errors first for best results.

How do I minify HTML after prettifying?

Use our HTML minifier tool. Paste your formatted HTML and get a compact version. Both prettifier and minifier work in your browser.