JavaScript Tools

JavaScript Minifier

JavaScript Minifier — minify JavaScript and report how many bytes you saved. It works entirely in your browser, with nothing uploaded to any server.

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

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

JavaScript input
Minified JavaScript



  
How to use JavaScript Minifier

  
    
      
  1. Type or paste your text into JavaScript Minifier's input area.
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  2. Watch the output update instantly while you adjust the text.
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  3. When it looks right, Copy to save it.
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About this tool

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

  
Because it runs on your device, it is fast and private and works offline once loaded. Your input never leaves the page, and no account or install is required.

  
Frequently asked questions

  

      
What does JavaScript Minifier do?
JavaScript Minifier runs entirely on your device: add your input, and it minifies it locally in real time.

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

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

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

  

  
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