JavaScript Tools

JS Formatter Online

JS Formatter Online — format JavaScript online and copy the tidied result. 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 Online 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 Online

  
    
      
  1. Drop your text into the field at the top of JS Formatter Online.
    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. When it looks right, Copy to save it.
    5. 
  

  
About this tool

  
JS Formatter Online runs entirely in your browser. JS Formatter Online 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 is JS Formatter Online for?
Use JS Formatter Online to format your input without installing anything using the Indent control; everything happens client-side.

      
Does JS Formatter Online cost anything?
No — JS Formatter Online is completely free, with no sign-up and no hidden limits.

      
Where is my data processed by JS Formatter Online?
Entirely in your browser — JS Formatter Online keeps your data on your own machine and sends nothing anywhere.

      
Does JS Formatter Online work on mobile?
Yes — JS Formatter Online is just a web page and runs on any modern browser, including phones and tablets.

  

  
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