What developer tools are available?

We offer a wide range of developer tools including JSON formatter, XML validator, YAML converter, UUID generators, code formatters for HTML/CSS/JS/SQL, regex tester, JWT debugger, and more.

Can I format minified code?

Yes, our code formatters can transform minified or compressed code into readable, properly indented output. Supports HTML, CSS, JavaScript, SQL, and more.

Is my code data sent to any server?

Never. All processing is done client-side in your browser. Your source code, JSON, or any other data remains on your device at all times.

What formats do the converters support?

Our tools support JSON, XML, YAML, CSV, and more. You can convert between these formats while preserving data structure and encoding.

JavaScript Beautifier

Free online javascript beautifier for developers. Format and beautify JS code. Fast and private.

Formatted

Paste JS above

Embed this tool

Copy and paste the code below into your website to embed this tool for free. An attribution link to The Util Box is required.

<iframe src="https://www.theutilbox.org/embed/js-formatter" width="600" height="500" frameborder="0" style="border: none; max-width: 100%;" title="Free JavaScript Beautifier tool from The Util Box"></iframe>
<!-- Free tool by The Util Box — https://www.theutilbox.org/tools/js-formatter -->
<a href="https://www.theutilbox.org/tools/js-formatter">JavaScript Beautifier by The Util Box</a>

Frequently Asked Questions about JavaScript Beautifier

What Is JavaScript Beautifier?

Free online javascript beautifier for developers. Format and beautify JS code. Fast and private. Whether you need a quick calculation, text transformation, or data conversion, this free online developer code tool delivers instant results entirely in your browser — no server uploads, no sign-ups, and no data leaves your device.

How to Use the Free JavaScript Beautifier Online

Enter your input — type, paste, or select data in the provided field.
Adjust options — tweak any available settings or parameters to match your needs.
Get instant results — output appears immediately as you type or after clicking a button.
Copy or export — use the copy button to grab the result for use elsewhere.

All processing happens client-side using JavaScript, so your information never leaves your computer. This free online developer code tool requires no registration and works on any modern browser.

Why Choose Our Free JavaScript Beautifier Tool?

100% free — no hidden premium tiers or usage limits.
Fully private — runs entirely in your browser; no data is sent to any server.
Instant & fast — results appear in milliseconds with zero load times.
Works offline — after the first load, the tool is available without an internet connection.
No sign-up — open the page and start using it immediately.

JavaScript Beautifier — Quick Reference

Feature	Details
Category	developer code
Processing	100% client-side (browser)
Privacy	No data leaves your device
Cost	Free — no sign-up required
Works Offline	Yes (after first load)