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JavaScript Formatter & Minifier

Beautify compressed JavaScript for readability or minify for production. Everything runs in your browser · no server, no tracking.

Developer Tools Runs locally No data sent
js beautify js minify formatter client-side only
Indent size:
JavaScript Input
0 chars
->
Formatted JS
0 chars Processing failed
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Beautify formats minified or compressed JavaScript into readable code with proper indentation and line breaks -great for debugging or reading third-party scripts. Minify strips comments and collapses whitespace to reduce file size for production. String and template-literal contents are preserved unchanged.

What is JavaScript Formatter & Minifier?

JavaScript Formatter & Minifier helps you switch between readable JS source and compact output for production. It is useful for reviewing code snippets, debugging generated scripts, and shrinking small files after you finish editing them.

How to Use JavaScript Formatter & Minifier

  1. Paste JavaScript into the input panel.
  2. Choose beautify or minify mode.
  3. Adjust indentation if you want more readable output.
  4. Copy the final code into your app, docs, or deployment workflow.

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Understand JavaScript Formatter & Minifier ▾
Example
Input const f=x=>x*2;const arr=[1,2,3].map(f)
Output const f = x => x * 2; const arr = [1, 2, 3].map(f);
Common Use Cases
  • Beautify compressed JavaScript before debugging or review
  • Inspect generated bundle snippets and utility functions more clearly
  • Minify small scripts after editing them in the browser
  • Compare formatting changes when preparing code samples or docs
Why Use This Tool
  • Useful for debugging minified snippets and generated code quickly.
  • Lets you move between readable and compact JS without extra tooling.
  • Runs locally so scripts stay in the browser while you format them.
Frequently Asked Questions
Does it work with TypeScript?

It formats JavaScript syntax. TypeScript-specific type annotations are passed through without validation.

Does it handle JSX?

Basic JSX syntax is preserved during formatting.

What does JavaScript Formatter & Minifier Online - Beautify & Compress JS Free do?

JavaScript Formatter & Minifier Online - Beautify & Compress JS Free runs entirely in your browser and helps you complete this task without uploading data to a server.

Is JavaScript Formatter & Minifier Online - Beautify & Compress JS Free free to use?

Yes. This tool is free to use and does not require sign-up.