Javascript Beautifier

Instantly converts your JavaScript code snippets into pretty-printed format, syntax highlighter.

JS beautifier for developers instantly.

Beautify Code (Control+Enter)
Unpack / Deobfuscate
⤓ Save to device
Select a theme:

HTML <style>, <script> formatting:

Additional Settings (JSON):

Keep in mind

  • Always keep a backup and verify your code before publishing!
  • We use local storage to improve user experience.
  • This website doesn't send your code to the server and doesn't save it.
  • Please report if you find an error or you have any suggestion.


Commands are parameter-less actions that can be performed on an editor. Their main use is for key bindings.

Beautify Code.
Ctrl-A (PC), Cmd-A (Mac)
Select the whole content of the editor.
Ctrl-D (PC), Cmd-D (Mac)
Deletes the whole line under the cursor, including newline at the end.
Ctrl-Z (PC), Cmd-Z (Mac)
Undo the last change.
Ctrl-Y (PC), Cmd-Y (Mac)
Redo the last undone change.
Ctrl-F (PC), Cmd-F (Mac)
Ctrl-G (PC), Cmd-G (Mac)
Find Next
Shift-Ctrl-G (PC)
Shift-Cmd-G (Mac)
Find Previous
Shift-Ctrl-F (PC)
Cmd-Alt-F (Mac)
Shift-Ctrl-R (PC)
Shift-Cmd-Alt-F (Mac)
Replace All
JSON Beautifier CSS Beautifier HTML Beautifier XML Beautifier

Why use JavaScript Beautifier?

Javascript is a web based programming language that is used extensively in many websites. Often the javascript used is provided has white space compressed to reduce the size of the data transferred. This site give you a quick and easy way to format (beautifier) the javascript so you can easily read it.

Web developers often use JavaScript Compressor to format their JavaScript source code in a particular style or compact them in one line and this makes source code difficult to read and understand. JavaScript Beautifier reformats JavaScript source code to make it more readable. Code beautification involves parsing the JavaScript source code into component structures, such as assignment statements, if blocks, loops, etc., and formatting them in a proper manner.

Often when writing Javascript your indentation, spacing, and other formatting can become a bit disorganized. It is also common for multiple developers to work on a single project who have different formatting techniques. This tool is helpful for making the formatting of a file consistent. It is also common for Javascript to be minified or obfuscated. You can use this tool to make that code look pretty and readable so it is easier to edit.

Whether you're a new or experienced web developer, you know how quickly JavaScript code can build up, especially when working on more complicated projects. Messy code is difficult to read and work with, and it can make collaboration a nightmare. Sure, you can leave comments behind in complicated segments of your scripts to help yourself and others, but that ultimately just clutters the code even more.

Everything in your code makes a difference from your characters and spacing to your brace style, tabs, and indentations. Or at least it should. Anything unused or that takes longer than it should to achieve its intended function is just wasted space and resources. In order to make your JavaScript code as easy to read and efficient as possible, you'll need code beautification.

Simply paste your JavaScript code into the provided text box, and the beautifier will automatically eliminate clutter and format the code to an easy to read standard. This is great for any web developer, and it really helps out with collaborative projects since it ensures each member is working with an agreed-upon format.

Benefits of Clean or Beautified JS code

  1. Easy to read or change code
  2. Easy to add new comments
  3. Better to write clean and commented code while working in a team with lots of developers

How To Use?

Enter JavaScript code then click Beautify button

Enter your messy, minified, or obfuscated Javascript (JS) into the field above to have it cleaned up and made pretty. The editor above also contains helpful line numbers and syntax highlighting. There are many option to tailor the beautifier to your personal formatting tastes.

To beautify your javascript online paste it into the editor on the left and your formatted javascript will appear on the right after you have chosen your options in the centre console.

When formatting you can choose the level of indentation in terms of spaces and whether to preserve newlines and how many should be preserved. This could be useful for code, which has huge gaps between functions.

Once you have finished formatting you can copy the code out of the editor to your clipboard using the copy button on the bottom right, or download a .js file directly to your computer.

You can also copy, clear, redo and undo and download your javascript data.

If you want to beautify JS code from your file then there is file open functionality. Open the file and directly beautify.

Frequently Asked Questions

+ Where will the code snippet I enter be stored?

When you enter the Javascript source code on this page, the code snippet will be processed right in the browser. Therefore, your code is only stored in your device and not uploaded to any server.

+ Is it safe to use this website?

All communications with our servers are made through secure SSL encrypted connections (https). We do not keep or inspect the contents of the entered data or uploaded files in any way.

+ What is this tool? What is javascript beautifier?

It is a complete online solution for formatting/beautifying javascript. Sometimes you only have a copy of the code that has been minified or written by an extremely messy developer. This tool will allow you to format that javascript in a way that is clean and useable.

+ What is JavaScript?

JavaScript often abbreviated as JS, is a high-level, just-in-time compiled, multi-paradigm programming language that conforms to the ECMAScript specification. JavaScript has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions.

+ Does Javascript Beautifier Online Tool log my data?

Absolutely NOT, this Javascript Beautifier doing all the formatting work on the client side, all logic are implemented by Javascript. There are 2 major advantages:

1. Your data never transmitted in the Open Internet, so you know it's secure;

2. It's much faster than doing all the work in the server side, because there is no Internet Delay.


  • Instantly prettify/beautify your JavaScript code to make it nicely formatted and legible
  • This free online JavaScript code beautifier and cleaner tool allows you to tidy and optimize your code. Wheather it's an obfuscated, minimized or just a messy script, this program will help you bring it to a more readable format.
  • This little beautifier will reformat and re-indent bookmarklets, ugly JavaScript, unpack scripts packed by popular packer, as well as partly deobfuscate scripts processed by the npm package javascript-obfuscator.
  • Online Javascript beautifier takes ugly, minified or obfuscated javascript and make it clean, well-formatted code. It gives the code proper indentation, newlines, spaces to make it easier to read.
  • There are many options in the options button to give the beautifier your personal beautifying tastes.
  • While writing Javascript your spacing, parenthesis, brackets and other formatting can become a bit disorganized. Open and Closing brackets could be confusion and our formatter will clearly align each brackets properly inside the Javascript code.
  • Beautify HTML, XML, CSS, JavaScript and JSON code when you open a .css/.js/.json/.html/.xml file.
  • Safe and secure: Best and Secure Online Javascript Formatter and Javascript Beautifier works well in Windows, Mac, Linux, Chrome, Firefox, Safari, and Edge.
  • Completely free: Our tool is free to use. From now you don't have to download any software for such tasks.


Eva Burton: This free online tool lets you beautify/format your JavaScript code with no side effects.

David Jantz: The best way to beautify javascript. Make your code more readable for free.

Aaron Walton: It works well to convert ugly JS code into beauty.

Eva Overcash: A simple online tool that does exactly what it says.

Lori Endres: The online beautifier will prettify and syntax-highlight the code making it easier to read and understand.

Amanda Ramsey: This online javascript beautifier tool helps you to format raw Javascript string so it can easily be read by human being.