Free Online Tool

JavaScript Beautifier

Free JavaScript beautifier. Paste minified JS and get clean, formatted code with proper indentation. Choose 2-space, 4-space, or tab indent style.
























What is this tool?


JavaScript Beautifier takes minified or poorly formatted JavaScript code and re-formats it with proper indentation, line breaks, and spacing. This makes the code much easier to read, debug, and understand.


Why use this tool?


Minified JavaScript is nearly impossible to read. When you need to inspect third-party scripts, debug production code, or understand how a library works, this tool converts dense one-liners into clean, structured code instantly — right in your browser.


Tips & Best Practices


    

  • Use this to reverse-engineer minified scripts from websites
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  • Choose your team's preferred indent style (2 spaces, 4 spaces, or tabs)
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  • Pair with a linter for full code quality checks
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  • Note: variable names shortened by minifiers cannot be restored
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Frequently Asked Questions


Is my data safe?


Yes. Everything runs in your browser. No data is ever sent to a server.


Can this restore original variable names?


No. Minifiers rename variables to shorter names and that information is lost. This tool only reformats the structure and indentation.


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