JavaScript Beautifier

Paste minified, bundled or badly indented JavaScript and get it back with consistent indentation and line breaks, so you can read a production bundle or clean up a snippet before sharing it. It parses the code rather than guessing, and runs in your browser.

• Re-indents and re-breaks code from a real syntax tree
• Good for reading minified bundles and third-party scripts
• Nothing is uploaded

Can it restore original variable names?

No. Names shortened by a minifier are gone unless you have a source map. Beautifying restores layout, not names.

JavaScript Beautifier runs in your browser, so there is no server call for it. API docs covers the tools you can call from code.