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JavaScript Beautifier
Format and clean up your JavaScript code instantly
Format and Clean Your JavaScript
A JavaScript beautifier reformats minified or messy JS into clean, readable code with consistent indentation, spacing and line breaks. Paste compressed code from a production bundle or untidy code from anywhere and instantly get a properly formatted version that is far easier to read, review and debug.
It is a developer staple for inspecting third-party scripts and tidying your own code. Formatting happens entirely in your browser, so your code is never uploaded.
Frequently Asked Questions
It re-indents and re-spaces your code into a clean, consistent layout without changing what the code does — only whitespace and formatting are affected.
Yes. Paste minified or compressed JS and the beautifier expands it into readable, indented code, which is useful for debugging production bundles.
No. The logic is untouched; the output behaves identically to the input.
No. The tool runs locally in your browser, so your code stays private.
Yes, the JavaScript beautifier is free with no sign-up.