JavaScript Tools

JavaScript Formatter

JavaScript Formatter — format JavaScript with clean indentation and consistent spacing. It runs locally in your browser with no uploads and no sign-up.

Apply consistent indentation and spacing to JavaScript before you commit. Example: tidy a messy pasted snippet so a teammate can read it.
Format JavaScript
  1. Paste inconsistent JavaScript.
  2. Normalise spacing and indentation.
  3. Copy the tidy code.
Example: fix inconsistent spacing across a file.
Use to standardise formatting before committing.
Client-sideRuns entirely in your browser — your data never leaves your device.

JavaScript Formatter is a browser-based web developer tool on WebDevToolsBase. JavaScript Formatter — format JavaScript with clean indentation and consistent spacing. It runs locally in your browser with no uploads and no sign-up. 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 Formatter 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 Formatter

  
    
      
  1. Drop your text into the field at the top of JavaScript Formatter.
    2. 
      
  2. Tune the Indent control before you format.
    3. 
      
  3. JavaScript Formatter updates the output automatically as you type.
    4. 
      
  4. Use Copy to keep or reuse the result.
    5. 
  

  
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About this tool

  
There is no server behind JavaScript Formatter. JavaScript 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 is JavaScript Formatter for?
JavaScript Formatter lets you format your input right in the browser using the Indent control, with the result shown instantly and nothing uploaded.

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

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

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

  

  
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