Javascript Beautifier and Formatter

Javascript Beautifier and Formatter

Use this free online Javascript beautifier tool to format poorly formatted or minified Javascript code. This Javascript source code beautifier beautifies the code so that it is easier to read and understand by humans.

Created by Commontools | Updated on: April 13, 2023


Indentation size:


Are you tired of looking at ugly and unreadable JavaScript code? 

Well, fear not! The free online JavaScript Beautifier/Formatter is here to save the day and time. This nifty online tool makes it a breeze to beautify your code and give it the style and structure it deserves in a few clicks.

Whether you've got some pesky minified javascript code or unindented mess on your hands, paste it into the tool, and voila! You'll get a beautiful, formatted output that's easy on the eyes, understandable, and a joy to work with. 

Say goodbye to the headache of messy or unorganized code and hello to a more enjoyable coding experience with this JavaScript Beautifier/Formatter.

What is Javascript Beautifier/Formatter Tool?

The JavaScript Beautifier/Formatter tool is an online tool designed to help developers improve the readability and structure of their JavaScript code. It takes in any code as input, whether minified or unindented, and applies formatting rules, resulting in a more organized and easily understandable output that others appreciate. 

This tool is especially useful for developers and programmers who want to share their code with others or those working on a project with multiple collaborators. By using the JavaScript Beautifier/Formatter tool, developers can easily save time and effort by avoiding manually formatting their piece of code. 

In short, this tool is a helpful resource and utility for anyone who wants to improve the appearance and functionality of their JavaScript code.

Why to beautify javascript code?

Code beautification and formatting can work like wonders for developers who are dealing with minified or unindented code. By applying formatting rules to the code, it becomes much easier to:

  • Read,
  • Understand 
  • Debug

Not only does code beautification improve the readability and structure of your code, but it also makes it simpler to navigate and comprehend other developers' code. 

As a result, this technique can help facilitate and streamline collaboration and enhance productivity. With code that is easy on the eyes and well-organized, developers can focus on what really matters - building and refining high-quality software or application.

What are the important parts and conventions of code formatting?

Code formatting conventions or parts can vary greatly depending on the language being used. However, adhering to these conventions is critical for creating readable, maintainable, and efficient code. Here, we'll explore some of the key elements that are critical for code formatting conventions.

Indentation and White Space

Indentation refers to using spaces or tabs to create a visual structure and hierarchy within the code. Proper indentation makes it easier to read and follow the code flow. Similarly, using white space can make the code more visually appealing and less cluttered.

Capitalization and Naming Conventions

Capitalization and naming conventions help to make code more readable and consistent. By following a standard naming convention for functions and variables, developers can quickly and easily understand what the code is doing. Uniform or Consistent capitalization also makes it easier to spot typos and errors in the code.

Style and Spelling

The style and spelling of functions, variables, and other code elements can also play a role in the overall readability of the code. Following a consistent style and spelling convention can make it easier for developers to understand and work with the code. Additionally, consistent spelling and formatting can make searching for specific code elements easier.


Finally, comments are an essential element of code formatting. Well-written comments provide context and explain the purpose of the code, making it easier for others to understand and modify the code as needed. Without comments, code can be difficult to understand and maintain over time.

How do I beautify or format the JavaScript code using the online tool?

Here's a step-by-step guide on how to use our free online JavaScript Beautifier and Formatter:

  1. Open your web browser and go to the website that hosts our tool.
  2. Once the page has loaded, you will see an input textarea where you can paste your minified or unindented JavaScript code.
  3. If you want to upload a file containing your code instead of pasting it, click the "Upload" button and select the file from your device.
  4. Next, you can choose your preferred indentation size by entering a number in the "Indentation Size" input field. The default indentation size is 2 spaces.
  5. To beautify your code, click the "Beautify" button. The output textarea will then display the formatted and indented code.
  6. If you want to start over with a fresh input field, click the "Clear" button to clear the input and output textareas.
  7. If you're satisfied with the beautified code and want to use it in your project, you can click the "Copy" button to copy the code to your clipboard.


Example 1:

Let's say you have some minified JavaScript code that looks like this:

function myFunction(){var greeting="Hello, World!";alert(greeting);}

To make this code more readable and easier to work with, you can use our JavaScript Beautifier and Formatter. Here's how:

  1. Go to the website that hosts our tool.
  2. Copy the minified code and paste it into the input textarea.
  3. Select an indentation size of 2 by entering the number 2 in the "Indentation Size" input field.
  4. Click the "Beautify" button to format the code.
  5. The output textarea will display the beautified code, which now looks like this:

function myFunction() {

  var greeting = "Hello, World!";



Example 2:

Let's say you have an unindented JavaScript code that looks something like this:

if (true) {

for (var i = 0; i < 10; i++) {




To make this code more organized and easier to read, you can use our tool. Here's how:

  1. Go to the website that hosts our tool.
  2. Copy the unindented code and paste it into the input textarea.
  3. Leave the indentation size at the default setting of 4 spaces.
  4. Click the "Beautify" button to format the code.
  5. The output textarea will display the beautified code, which now looks like this:

if (true) {

    for (var i = 0; i < 10; i++) {




As you can see, the code is now much more easier to read and understand, thanks to the formatting and indentation provided by our JavaScript Beautifier and Formatter.


Is this javascript formatter/ beautifier tool safe & secure?

Yes, you can rest easy knowing that our JavaScript formatter tool is safe and secure. We take your privacy seriously and understand that the confidentiality of your code is of utmost importance. That's why we've taken all the necessary steps to ensure that your data is not saved on our server and is not accessible to any third party. Your code is only visible to you during the tool session.

Is this javascript formatter/ beautifier tool free?

Yes, it is absolutely free.

Do we save data?

No, we do not save data, as our tools only work on client browsers.

Is this javascript formatter or javascript beautifier the same?

Yes, it's the same. It's just two different names to represent the same tool.



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MLA Style Citation

"Javascript Beautifier and Formatter.", 2024. Thu. 13 Jun. 2024. <>.

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