JS Beautifier
Beautify minified JavaScript into a clear, readable format instantly
The result will appear here…
About JS Beautifier
Fastols' JS Beautifier takes JavaScript code compressed onto one line and returns it organized with clear indentation based on braces, so you can read and understand the code's structure easily.
Useful when working with code that was minified for production and you need to review or understand it, or code copied from an external source with no formatting. Formatting happens entirely inside your browser — no data is uploaded to any server.
How to use JS Beautifier
- 1Paste your minified JavaScript into the box
- 2The beautified version appears automatically with clear indentation
- 3Click "Copy Result" to copy the formatted code
Frequently Asked Questions
Does formatting change the code logic?
No, the tool only adds indentation and line breaks for readability — the code's logic stays exactly the same.
Is the tool completely free?
Yes, 100% free with no usage limit.
Is my data stored on any server?
No, formatting happens entirely inside your browser — nothing is sent to any server.