HTML Beautifier

The HTML Beautifier is a free online tool that reformats minified or messy HTML into clean, properly indented, readable markup. Paste a compressed or tangled document into the left panel, pick your indentation, and it instantly re-indents every tag with sensible line breaks so you can read, review, and edit the code with ease.

Everything runs locally in your browser using the well-tested js-beautify engine, so your markup, templates, and email HTML never leave your machine. There are no uploads, no accounts, and no server-side processing.

How to beautify HTML

1. Paste or type your minified or messy HTML into the input panel on the left.
2. Choose your indentation: 2 spaces, 4 spaces, or tabs.
3. Optionally set a wrap width to break very long lines at 80, 100, or 120 characters.
4. Click Beautify HTML to pretty-print the markup into the output panel.
5. Use Copy or Download to grab the result as an .html file.

What does an HTML beautifier do?

An HTML beautifier takes markup that has been collapsed onto one line or indented inconsistently and rebuilds it with predictable structure: one block element per line, nested tags indented under their parents, and consistent spacing throughout. This is the exact reverse of minifying. Where the HTML Minifier strips whitespace to shrink a file for production, the beautifier adds that whitespace back so a human can actually work with the code.

Why is minified HTML hard to read?

Minified HTML removes the line breaks and indentation that show a document's hierarchy, packing everything into a single dense string to save bytes. That is great for page speed but terrible for debugging. When you need to inspect a saved page, audit a landing-page template, or edit HTML that a build tool or CMS exported on one line, beautifying it first turns an unreadable wall of tags into a clear, scannable tree.

HTML Beautifier features

• Configurable indentation — 2 spaces, 4 spaces, or tabs — for consistent, diff-friendly output.
• Optional line wrapping at 80, 100, or 120 characters to keep long lines manageable.
• Inline-aware formatting that keeps inline elements like <a>, <span>, <strong>, and <em> on the same line as their text, while giving block elements their own lines.
• Preserves comments, <pre> and <textarea> content, and the doctype exactly as written.
• Copy and Download the result instantly as an .html file.
• 100% client-side — nothing is uploaded, logged, or stored.

When to beautify vs. minify HTML

Beautify while you are reading, reviewing, or editing markup: the extra whitespace makes the structure obvious and diffs clean. Minify right before you ship, when smaller payloads and faster loads matter more than readability. The two are lossless opposites, so you can freely round-trip a file between them as you move from development to production and back.

Front-end work rarely stops at HTML. When you are ready to compress the rest of your assets for production, the CSS Minifier and the Javascript Minifier shrink your stylesheets and scripts the same way the HTML Minifier handles markup. And if your project also deals with other structured text, the XML Formatter & Beautifier pretty-prints XML documents while the SQL Formatter & Beautifier tidies database queries, so your whole stack stays readable.

Frequently Asked Questions

Is my HTML uploaded to a server?

No. All formatting happens locally in your browser using client-side JavaScript. Your HTML is never sent to, stored on, or seen by any server, which makes the tool safe for proprietary templates and private markup.

What is the difference between beautifying and minifying HTML?

Beautifying adds line breaks and indentation so the markup is easy to read and edit. Minifying removes that whitespace to make the file as small as possible for faster loading. Both preserve the underlying content, so you can convert back and forth without losing anything.

Does it change how my page renders?

No. The beautifier only adds insignificant whitespace between tags; it does not alter attributes, content, or structure. Rendered output stays the same, aside from harmless whitespace differences that browsers ignore.

Can I choose tabs instead of spaces?

Yes. You can format with 2-space, 4-space, or tab indentation to match your project's coding style, and you can optionally wrap long lines at 80, 100, or 120 characters.

Does it preserve inline elements and pre-formatted blocks?

Yes. Inline elements such as links, spans, and emphasis stay on the same line as their surrounding text, while the exact contents of <pre> and <textarea> blocks are left untouched so whitespace-sensitive content is not disturbed.

Can it handle a full HTML document with a doctype?

Absolutely. You can paste a complete page including the <!DOCTYPE>, <head>, and <body>, or just a fragment of markup. The beautifier indents whatever you give it and keeps the doctype and comments intact.