JavaScript Tools

JavaScript Beautifier

JavaScript Beautifier — beautify minified or messy JavaScript into readable code. It works entirely in your browser, with nothing uploaded to any server.

Un-minify and pretty-print JavaScript into readable, indented source. Example: paste a one-line bundle and get spaced, line-broken code back.
Beautify JavaScript
  1. Paste minified JavaScript.
  2. Apply readable indentation and line breaks.
  3. Copy the beautified source.
Example: turn a minified bundle into readable, indented source.
Use to make hard-to-read JavaScript legible.
Client-sideRuns entirely in your browser — your data never leaves your device.

JavaScript Beautifier is a browser-based web developer tool on WebDevToolsBase. JavaScript Beautifier — beautify minified or messy JavaScript into readable code. It works entirely in your browser, with nothing uploaded to any server. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.

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JavaScript Beautifier is a free JavaScript Tools utility that runs entirely in your browser — nothing you enter is uploaded.

JavaScript input
Formatted code


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How to use JavaScript Beautifier

  
    
      
  1. Paste the text you need to format into the input box.
    2. 
      
  2. Tune the Indent control before you format.
    3. 
      
  3. The result is computed live in your browser as you edit the input.
    4. 
      
  4. Use Copy to keep or reuse the result.
    5. 
  

  
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About this tool

  
There is no server behind JavaScript Beautifier. JavaScript Beautifier is a free JavaScript Tools utility that runs in your browser, doing its work on the input you provide without a backend.

  
It is designed to do one job well and stay out of your way. It behaves the same on desktop and mobile, with nothing stored remotely.

  
Frequently asked questions

  

      
How do I use JavaScript Beautifier?
JavaScript Beautifier runs entirely on your device: add your input using the Indent control, and it formats it locally in real time.

      
Do I need an account for JavaScript Beautifier?
No — JavaScript Beautifier needs no account, sign-up or installation.

      
Is my input private in JavaScript Beautifier?
Yes — your input never leaves your device; JavaScript Beautifier does all the work in your browser.

      
Can I use JavaScript Beautifier without a connection?
Yes — after the first load JavaScript Beautifier runs entirely offline.

  

  
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