JavaScript Formatter & Beautifier
Beautify minified JavaScript with safe, ASI-aware formatting.
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About the JavaScript Formatter & Beautifier
Minified JavaScript is unreadable by design - one endless line of single-letter variables. This beautifier expands it back into structured code: statements on their own lines, braces balanced and indented, operators spaced for human eyes.
Unlike naive pretty-printers, this one never merges two of your original lines. That single rule makes it safe for code that relies on automatic semicolon insertion (ASI) - formatting can add structure, but it can never change what your code does. Strings, template literals, regexes and comments are passed through untouched.
How to use it
- 1Paste minified or messy JavaScript into the input.
- 2Pick the 2-space or 4-space output.
- 3Copy the formatted code back into your editor.
Frequently asked questions
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