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HTML Formatter

Beautify or minify HTML instantly — fix indentation, clean code, compress for production

100% in-browserBeautify & MinifyCustom indentSize savings %Browser-only
Input HTML
Formatted HTML
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HTML Formatter — Clean, Indent, and Minify HTML Instantly

Messy HTML is hard to read and harder to debug. When HTML arrives from a CMS, template engine, or API response, it's often minified or inconsistently indented. The HTML Formatter fixes this instantly — paste your HTML, click "Beautify", and get cleanly indented, readable code with consistent attribute formatting and proper line breaks between elements.

For production deployment, use the "Minify" option to strip all whitespace, comments, and redundant characters from your HTML. Minified HTML reduces page size by 10–40%, improving load times and Lighthouse scores. The <script> and <style> blocks are preserved intact — only the HTML structure is compressed.

How it works

Format HTML in Under 10 Seconds

01

Paste HTML

Paste any HTML — a full page, a partial snippet, or a minified blob. All formats work.

02

Set indent style

Choose 2 spaces, 4 spaces, or tab to match your project's code style guidelines.

03

Beautify or Minify

Beautify adds proper indentation and readable structure. Minify compresses for production.

04

Copy the output

One click copies the formatted HTML to your clipboard, ready to paste into your editor.

Use cases

Who Uses an HTML Formatter

🧹

Clean CMS output

WordPress, Drupal, and other CMS tools often produce messy or inline-styled HTML that's hard to edit by hand.

📦

Production minification

Strip whitespace and comments from HTML templates before deployment to reduce page size and improve load time.

🔍

Debug layouts

Beautifully indented HTML makes it easy to spot missing closing tags, incorrect nesting, and structural errors.

📧

Email template formatting

HTML email templates are notoriously messy. Format them for editing, then minify for sending.

🤖

AI/LLM output cleanup

HTML generated by AI tools often needs formatting before use in a real project.

📄

Code review prep

Format HTML before committing to version control so diffs are clean and readable.

FAQ

Frequently Asked Questions

1What is the difference between HTML beautify and HTML minify?
Beautify adds indentation, line breaks, and consistent spacing to make HTML readable for humans. Minify removes all whitespace, comments, and unnecessary characters to make HTML as small as possible for browsers. Use beautify for development and editing; use minify for production deployment.
2Does HTML formatting change how the page renders?
In almost all cases, no. HTML is not whitespace-sensitive for layout (CSS handles layout). Removing or adding whitespace between block elements doesn't change rendering. The one exception is inline elements (like <span> or text nodes) where extra whitespace can occasionally add small gaps — this is rare in practice.
3Can I format just a fragment of HTML (not a full page)?
Yes. The formatter works on any HTML fragment — a component, a section, a single div tree. It doesn't require a complete document with <!DOCTYPE html> and <html> wrapper.
4How do I handle HTML with template syntax (Handlebars, Jinja, Liquid)?
The formatter treats template syntax as text content. It won't break {{variable}} or {% tag %} syntax — these are preserved as-is within the HTML structure. Results may be slightly imperfect around template blocks but the HTML structure is maintained.
5How do I diff two HTML files to find what changed?
Format both HTML files with the HTML Formatter first to normalise indentation and attribute order, then paste both into the Text Diff tool to see exactly which lines changed. Comparing minified HTML directly is nearly impossible — formatting first makes the diff meaningful.
6How do I beautify HTML online?
Paste your HTML and click Beautify. The tool adds proper indentation, line breaks between tags, and normalizes attribute formatting. Choose 2-space, 4-space, or tab indentation to match your project style.
7Why does my HTML look broken after minification?
Minification can break rendering when whitespace between inline elements like <span> is significant, or when JavaScript string literals contain HTML relying on whitespace. If layout breaks, use CSS display:block or explicit spacing rather than relying on whitespace between elements.
8How do I format HTML in VS Code?
Install the Prettier extension for VS Code. Right-click in an HTML file and select "Format Document". Configure Prettier as the default formatter and enable Format on Save for automatic formatting.
9How do I use Prettier to format HTML?
Run npx prettier --write "**/*.html" to format all HTML files. Configure options in .prettierrc such as printWidth, tabWidth, and htmlWhitespaceSensitivity.
10How do I format HTML in Python?
Use BeautifulSoup: from bs4 import BeautifulSoup; soup = BeautifulSoup(html, "html.parser"); print(soup.prettify()). This adds proper indentation and line breaks.
11How do I tidy messy HTML from a CMS?
Paste the CMS-generated HTML and click Beautify. The tool normalizes inconsistent indentation and makes markup readable. This is especially useful for WordPress, Drupal, and Squarespace output.
12How do I fix indentation in HTML generated by a template engine?
Template engines like Jinja2, Handlebars, and Liquid often produce inconsistently indented HTML because template tags and loops break indentation context. Paste the rendered output into the HTML Formatter and click Beautify — it normalises indentation regardless of what generated the HTML, without breaking template variable syntax like {{ variable }} or {% block %}.

Last updated: May 2026

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