What is Online Code Formatter?
Beautify HTML, CSS, JavaScript, JSON, and XML online — free code formatter with syntax indentation.
Launch the tool here: Online Code Formatter →
How to use Online Code Formatter
- 01
Select your code language
Choose HTML, CSS, JavaScript, JSON, or XML so the formatter applies the correct syntax rules.
- 02
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.
- 03
Click Format / Beautify
Apply consistent indentation, line breaks, and spacing for easier reading and code review.
- 04
Review the formatted output
Scroll through the prettified code and confirm structure, nesting, and brackets look correct.
- 05
Copy and use in your project
Copy the beautified code into your editor, CMS, or documentation. Free, private, and ready for SEO-friendly pages.
Who is this tool for?
Marketers & sales
Quick WhatsApp links, QR codes, and message templates without installing software.
Small businesses
Free utilities for customer chat, PDF invoices, and social sharing.
Developers & SEO
Minifiers, formatters, and sitemap helpers for faster site work.
Frequently asked questions
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.