JavaScript Tools

JS Formatter

JS Formatter — format JavaScript code with clean, consistent indentation. It works entirely in your browser, with nothing uploaded to any server.

Client-sideRuns entirely in your browser — your data never leaves your device.

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

JavaScript input
Formatted code



  
How to use JS Formatter

  
    
      
  1. Start by adding the text you want to format into JS Formatter.
    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. Finish by choosing Copy to take the output with you.
    5. 
  

  
About this tool

  
Everything JS Formatter does happens on your own device. JS Formatter handles your input locally and returns the result instantly, with no sign-up.

  
Because it runs on your device, it is fast and private and works offline once loaded. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.

  
Frequently asked questions

  

      
What does JS Formatter do?
JS Formatter lets you format your input right in the browser using the Indent control, with the result shown instantly and nothing uploaded.

      
Is JS Formatter free to use?
Yes — JS Formatter is completely free, with no usage limits.

      
Does JS Formatter upload my data?
No — JS Formatter processes everything locally in your browser, so nothing you enter is uploaded or stored.

      
Does JS Formatter work offline?
Once the page has loaded, JS Formatter keeps working with no network connection.

  

  
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