Beautify and prettify JavaScript with consistent indentation and spacing. Runs entirely in your browser.
Cómo usar JS Formatter
Paste your JavaScript into the input box.
Pick the indent size you want.
Copy the beautified result.
Preguntas frecuentes
No, it only beautifies. Safe JavaScript minification needs a full parser to rename and drop code without changing behaviour, so this tool focuses on making code readable rather than smaller.
Yes. JSON is valid JavaScript syntax, so pasting a JSON object or array formats it cleanly with proper indentation.
No. Formatting runs entirely in your browser, so your code never leaves your device, which is important for proprietary or sensitive scripts.
A JavaScript beautifier that reformats minified or messy code with consistent indentation, spacing and line breaks for easier reading and debugging.
It is powered by a well-established formatting engine and runs locally in your browser, so your code stays private.
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