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Online Code Formatter

Beautify HTML, CSS, JavaScript, JSON, and XML online — free code formatter with syntax indentation.

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Beautify your code

Format HTML, CSS, JavaScript, JSON, and XML with readable indentation — 100% in your browser.

How to use

Step-by-step instructions

This free browser-based code formatter prettifies HTML, CSS, JavaScript, JSON, and XML with readable indentation and line breaks. Paste your code, choose the language, and copy the formatted output instantly — nothing is uploaded to servers, so your source stays private.

  1. Select your code language

    Choose HTML, CSS, JavaScript, JSON, or XML so the formatter applies the correct syntax rules.

  2. Paste your minified or messy code

    Drop in one file or a snippet. The tool runs entirely online in your browser with no server upload.

  3. Click Format / Beautify

    Apply consistent indentation, line breaks, and spacing for easier reading and code review.

  4. Review the formatted output

    Scroll through the prettified code and confirm structure, nesting, and brackets look correct.

  5. Copy and use in your project

    Copy the beautified code into your editor, CMS, or documentation. Free, private, and ready for SEO-friendly pages.

FAQ

Frequently asked questions

Common questions about Online Code Formatter — answered for quick reference and search engines.

Is this code formatter free?

Yes. It is a free online tool with no signup. Format as much code as you need.

Is my code uploaded to a server?

No. Formatting happens in your browser. Your HTML, CSS, JavaScript, JSON, and XML never leave your device.

Which languages are supported?

HTML, CSS, JavaScript, JSON, and XML. Pick the language before formatting for best results.

Can I format minified production files?

Yes. Paste minified bundles or single-line JSON and the beautifier expands them into readable, indented code.

Does formatting change how code runs?

No. Beautifying only adds whitespace and line breaks. Logic and output stay the same.

About Online Code Formatter

This free browser-based code formatter prettifies HTML, CSS, JavaScript, JSON, and XML with readable indentation and line breaks. Paste your code, choose the language, and copy the formatted output instantly — nothing is uploaded to servers, so your source stays private.

This free tool runs entirely in your browser. No signup, no data stored on our servers — your numbers and messages stay private on your device. Browse all free WhatsApp tools.

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