Free JavaScript Formatter – Beautify JS

Re-indent JavaScript for readability. Formatting does not run your code; optional preview is sandboxed. Local processing.

Everything runs in your browser. Your input is not sent to a server by this tool.

How to use the JavaScript Formatter

Open the JavaScript Formatter, enter your input, and run the action. Results appear on the same page so you can copy or download without leaving the tool.

How it works

The JavaScript Formatter processes data with client-side JavaScript where the implementation allows, so core input stays in your browser session for that step.

Why use the JavaScript Formatter

Get a quick, free result for everyday tasks without installing software or creating an account on a separate service.

Common use cases

JavaScript Formatter FAQ

Does Format execute my code?

No. Execution only happens if you explicitly run Preview in the sandbox.

Is it free?

Yes.

Features of this free tool

Tips for best results

Double-check important outputs before using them in documents or production systems. Keep original files when working with uploads until you confirm the result.

Why people choose ToolBoxy

ToolBoxy keeps the Free JavaScript Formatter free and simple: open the page, finish the task, and move on—no account wall. Related tools on this page point you to the next step.