Beautify JavaScript by indenting blocks and spacing statements with a simple formatter.
Try an example
Load a ready-made sample into this tool and run it. Every result you see is calculated live by the tool itself — nothing here is a pre-written answer.
Sample: input: function greet(name){return 'Hello, '+name;}
How to Use
- Paste JavaScript code.
- Click Run.
- Copy the readable code.
What this JavaScript beautifier does
This JavaScript beautifier formats code by indenting blocks and spacing statements so scripts are easier to read. Paste JavaScript that arrives minified, copied from a bundle, or written in one long line, and the tool lays it out line by line. You get readable code to copy back into your editor, with nesting that shows how functions and conditions fit together.
When readable code matters
Use it when you are reviewing a snippet from a library or a colleague, debugging a script you did not write, or preparing an example for documentation or a tutorial. Formatted code makes it easier to spot where a block opens and closes, and to follow the flow before you change anything.
Good to know
This is a simple formatter: it indents by braces and brackets and does not parse or validate the code. It will not find bugs, rename anything or repair a syntax error, so code that was broken before formatting stays broken afterward.
Frequently asked questions
Does beautifying change what my code does?
No. Only line breaks and indentation are added; your statements, variables and logic are untouched. JavaScript ignores the extra whitespace, so the formatted version runs the same as the original you pasted in.
Can it handle minified JavaScript?
Yes, that is its main job. Paste a minified file or compressed snippet and the tool spreads it across lines with indentation, so you can read and search through it comfortably.
Will it catch errors in my script?
No. The formatter does not parse or validate JavaScript, so it cannot flag syntax errors or bugs. Test the code in a console or in your project, as you normally would.
How to use JavaScript Beautifier
- Paste JavaScript code.
- Click Run.
- Copy the readable code.
Limitations
This is a simple formatter: it indents by braces and brackets and does not parse or validate the code.