Free Code Beautifier — HTML, CSS, JavaScript, JSON Formatting

Features

Format HTML, CSS, JavaScript, TypeScript, JSON, XML
Auto-detects language or accepts explicit choice
Configurable indentation (tabs, 2 spaces, 4 spaces)
Works on minified or concatenated source
Ad-free, client-side
Works offline as a PWA
No signup

How it works

Open freecodebeautify.app
Paste code into the input
Optionally select language explicitly
Copy formatted output

Common use cases

Reading third-party minified JavaScript
Cleaning up minified HTML from an export
Making CSS bundle files editable
Understanding JSON responses that lack formatting
Preparing code for documentation or blog posts

How it compares

Prettier is the gold standard as a local tool or IDE plugin but requires setup. Beautifier.io is similar online but ad-supported. Freecodebeautify is ad-free browser-based formatting for quick use without installation.

Privacy

All formatting happens in your browser. Safe for proprietary code.

Frequently asked questions

Is Freecodebeautify free?

Yes. Free, ad-free, no signup.

Which languages are supported?

HTML, CSS, SCSS, LESS, JavaScript, TypeScript, JSX, JSON, XML, and Markdown.

Does it minify as well?

For minifying specifically, use a dedicated minifier. Freecodebeautify focuses on beautification.

Is my code sent to a server?

No. Everything is client-side.

Can I use this for production formatting in CI?

For CI/CD pipelines, use Prettier locally. Freecodebeautify is for ad-hoc manual formatting.

What indentation does it default to?

Defaults to the convention for each language (2 spaces for HTML/CSS/JS, tabs for some others). Configurable.

Free Code Beautifier — HTML, CSS, JS, JSON, and more