Is FixTools HTML Formatter free?

Yes, fully free with no sign-up and no usage limits. Format as much HTML as you need.

Does formatting change my HTML's behaviour?

No. Formatting only changes whitespace and indentation. The browser renders formatted and unformatted HTML identically.

Can I format a full HTML page, not just a snippet?

Yes. Paste the complete contents of any .html file and the formatter will handle the entire document including doctype, head, and body.

What indentation style should I use?

Two spaces is the most common in modern web projects. Four spaces is preferred in some enterprise environments. Choose whatever matches your team's style guide.

Does the formatter work on HTML5 custom elements?

Yes. The formatter handles standard HTML5 elements as well as custom elements and web components.

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Free · Fast · Privacy-first

Format HTML Online Free

Paste any HTML — minified, messy, or hand-written — and FixTools will format it into clean, readable code with consistent indentation. Everything runs in your browser, so your code is never sent to a server.

⚡ Use Tool Now How it works

Cost: Free forever
Sign-up: Not required
Processing: In your browser
Privacy: Files stay local

⚡

Instant formatting in your browser

🔒

Supports HTML5 and custom elements

✨

Choose 2 or 4 space indentation

HTML Tool

HTML Formatter

All processing happens in your browser — your files are never uploaded to any server.

🚀Open HTML Formatter

100% Free · No account · Works on any device

How to use this tool

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Paste your HTML into the editor and click Format. The output panel will show your code with clean, consistent indentation ready to copy.

How It Works

Step-by-step guide to format html online free:

1
Paste your HTML
Open the HTML Formatter and paste your HTML code into the input panel. You can paste any amount of HTML, from a single snippet to a full page.
2
Choose your indentation
Select 2-space or 4-space indentation depending on your project's code style.
3
Click Format
Click the Format button. Your HTML will appear in the output panel with clean, consistent indentation immediately.
4
Copy the result
Click Copy to Clipboard to copy the formatted HTML and paste it back into your editor or file.

Real-world examples

Common situations where this approach makes a real difference:

Debugging CMS-generated HTML

WordPress and Squarespace often export dense, single-line HTML. Formatting it first makes it possible to identify duplicate IDs, unclosed tags, or misplaced attributes.

Onboarding into an unfamiliar codebase

Inherited HTML files with no indentation convention become readable in seconds, letting you understand the document structure immediately.

Preparing HTML for documentation

Clean, consistently indented HTML is required for documentation snippets. Format once, then copy directly into your docs.

When to use this guide

Use this when you need to quickly clean up HTML from any source — a CMS export, a colleague's file, or code you wrote in a hurry — without installing any software.

Pro tips

Get better results with these expert suggestions:

Validate after formatting

Run the formatted output through an HTML validator to catch any syntax errors that formatting may have exposed. Formatters work best on structurally valid HTML.

Use 2-space indent for most projects

Two-space indentation is the most common convention in web development teams. It keeps deeply nested code from drifting too far right.

Format before committing to version control

Formatting HTML consistently before each commit prevents noisy diffs caused by whitespace changes, making code reviews much easier.