Beautify and re-indent JavaScript online, free. JavaScript is the programming language of the web, running in browsers and Node.js. This formatter re-indents minified or messy JavaScript with consistent spacing so it is readable and diff-friendly — processing runs in your browser with nothing uploaded.
It expands compressed JavaScript back into a clean, consistently indented form without changing its meaning. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.
Paste minified or messy JavaScript and get clean, indented output immediately — no upload wait.
Normalises spacing and nesting so the whole file follows one style, ideal before committing or reviewing.
Your JavaScript is formatted locally in JavaScript; nothing is logged, stored, or sent to a server.
Unlimited formatting with no account or quota, on desktop and mobile.
Paste your JavaScript into the input box and click Format. The formatter runs instantly in your browser and shows the result on the right — no upload, no signup, no installation.
Yes. The JavaScript formatter is completely free with no limits, no account, and no watermark. All processing happens locally in your browser for privacy.
No. Your JavaScript never leaves your device — it is processed locally in JavaScript. We don't upload, log, or store your input, so it's safe for proprietary code and config.
No. Formatting only adds indentation and line breaks for readability; it does not change the meaning or behaviour of your JavaScript.
Yes. The tool is fully responsive and works on phones, tablets, and desktops — just open it in any modern browser.