JavaScript Beautifier

Restructure unformatted JS into readable style.

✓ Verified 2026 📅 Updated: Oct 8, 2026 ⚡ Instant Client-Side 🔒 Zero Tracking

⟨/⟩ Embed this tool on your site

Paste this into any page — the live tool appears with a credit link back here.

<iframe src="https://primefreetools.com/tools/js-beautifier/" width="100%" height="600" style="border:2px solid #000;border-radius:12px" loading="lazy" title="JavaScript Beautifier"></iframe><p><a href="https://primefreetools.com/tools/js-beautifier/">JavaScript Beautifier by PrimeFreeTools</a></p>

✏️ Sketching your tool…

About JavaScript Beautifier

Indent and space out minified JavaScript for debugging.

📐 Methodology & Reference Accuracy: Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.

🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.

JavaScript Beautifier – free online developer tools

Background reading: Js Beautifier on Wikipedia. More: all developer tools.

Frequently Asked Questions about JavaScript Beautifier

How do I use the JavaScript Beautifier?

Open the JavaScript Beautifier and use the controls in the workspace below: restructure unformatted js into readable style. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.

Is the JavaScript Beautifier free?

Yes. The JavaScript Beautifier is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.

Does the JavaScript Beautifier store or share my data?

No. The JavaScript Beautifier runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.

What can I use the JavaScript Beautifier for?

Indent and space out minified JavaScript for debugging. You will find it grouped under Developer Tools together with 78 other free tools on the PrimeFreeTools homepage.