Free Online HTML Formatter and Beautifier

Paste HTML and get clean, properly indented code instantly. Choose 2 space, 4 sp...

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Quick answer

To format HTML, paste your markup here and it beautifies instantly in your browser: each nested element is indented one level deeper, block elements go on their own lines, and short inline content stays on a single line. Choose 2 space, 4 space or tab indentation. The formatter safely preserves pre, textarea, script and style content byte for byte, keeps comments and IE conditional comments, and leaves void tags like br and img intact. Copy or download the .html when done, all client-side with no upload.

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HTML Formatter Features

Correct Nesting Indent - Each nested element is indented one level deeper, with block elements on their own lines.
2 / 4 / Tab Indent - Match your project style with two spaces, four spaces or real tab characters.
Safe Reformatting - Protects pre, textarea, script, style, comments and quoted attribute values.
Minify Toggle - Collapse the same HTML back into a compact production file with one click.
Smart Inline Content - Keeps short inline content like a link or a heading on a single readable line.
Copy and Download - Copy to clipboard or save a ready-to-use .html file. Runs entirely in your browser.

Why Use Free Online HTML Formatter and Beautifier?

Readable in One Click

Paste minified or messy HTML and get properly nested, indented markup with block elements on their own lines, instantly and in your browser.

Your Indent, Your Style

Choose 2 spaces, 4 spaces or tabs so the formatted output matches your project's code style and drops in without a noisy diff.

Safe by Design

A tokenizer keeps pre, textarea, script and style content byte for byte, so significant whitespace and inline code are never altered.

Format or Minify

Flip to Minify to collapse the same HTML back into a compact production file, then flip to Format to expand it again for editing.

100% In Your Browser

Your HTML never leaves the page. All formatting runs client-side in JavaScript, so nothing is uploaded to a server and nothing is stored.

Copy or Download .html

One click to copy the formatted result to your clipboard or download it as a ready-to-use .html file for your project.

What People Use the HTML Formatter For

Inspect Minified HTML

Beautify a compressed page so you can read its structure and understand how the markup nests.

Cleaner Code Reviews

Format HTML consistently so diffs are small and reviewers see real changes, not whitespace noise.

Learning HTML

Expand compact markup into readable, indented structure to study how elements nest inside a page.

Fixing Pasted HTML

Clean up markup copied from a CMS, email builder or dev tools into tidy, consistent indentation.

How It Works

1

Paste Your HTML

Drop your markup into the input box, or click Load sample to try it. The formatted output appears instantly as you type.

2

Choose Your Indent

Pick 2 space, 4 space or tab indentation. Each nested element is indented one level deeper, so the document structure is easy to read.

3

Copy or Download

Copy the clean HTML to your clipboard or download it as an index.html file, then paste it straight into your editor or code review.

Tips & Best Practices

Unminify to Read a Page

Paste minified HTML in Format mode to expand it onto indented lines when you need to understand or edit a compressed page.

Match Your Team's Indent

Set the indent to 2 spaces, 4 spaces or tabs so the formatted output drops into your codebase without churn in the diff.

Inline Code Stays Untouched

Content inside pre, textarea, script and style is preserved exactly, so formatting never breaks significant whitespace or inline code.

Frequently Asked Questions

Paste your HTML into the input box on this page. The tool formats it in your browser instantly, indenting each nested element one level deeper, placing block elements on their own lines and keeping short inline content on a single line. Choose 2 space, 4 space or tab indent, then click Copy or Download. Nothing is uploaded to a server.
An HTML beautifier reformats compact or messy markup into readable code. It adds line breaks and indentation so the nesting of tags is clear, puts block elements like div, section and li on their own lines, and keeps inline elements such as a, strong and span with their text. The page renders exactly the same; only the whitespace changes.
No. Whitespace inside pre and textarea is significant, and script and style content must not change, so the formatter captures those four elements first and preserves their content byte for byte. Only the structural markup around them is re-indented.
No. Formatting only adds or removes insignificant whitespace between tags, which the browser ignores. Your page renders identically. The one place whitespace matters is inside pre and textarea, and the formatter never touches those.
Paste the minified HTML and keep the default Format mode. The tool expands it back onto indented lines with correct nesting so it is readable again, which is handy for inspecting or editing a compressed page. Flip to Minify to collapse it back down.
Yes. Ordinary comments are kept on their own line, and IE conditional comments such as the if IE block are preserved verbatim because they carry logic. Quoted attribute values and void tags like br, img and input are also left intact.
No. Everything happens locally in your browser using JavaScript. Your HTML is never sent to or stored on any server, so it stays private even for proprietary markup and email templates. Close the tab and it is gone.

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