JS Beautifier
Format minified JavaScript code into readable format. Supports indent options and real-time conversion.
JS Beautifier
What is JS Beautifier?
JS Beautifier is a tool that converts minified or compressed JavaScript code into a readable format. It transforms single-line compressed code into well-formatted code with proper indentation and line breaks for better readability.
Key Features
- Real-time Formatting: Code is automatically formatted as you type
- Indent Options: Choose from 2 spaces, 4 spaces, or tabs
- String Preservation: String and regex literals are safely preserved
- Copy & Download: Copy results to clipboard or save as file
How to Use
- Paste your minified JavaScript code in the left input area
- Select your preferred indentation style (2 spaces/4 spaces/tab)
- The formatted result appears in real-time on the right
- Use the copy or download button to save the result
Who Is This For?
- Developers who need to analyze minified library code
- Anyone who needs readable code for code reviews or debugging
- Those who need to understand scripts extracted from websites
- Learners who want to understand code structure
When to use it
- When you need a quick estimate before a detailed review
- When you want to compare multiple input scenarios
- When you need to reduce repetitive manual calculations
- When you need reference values for work or study
- When you want to validate numbers before sharing them
Details
Results in JS Beautifier are generated from your input values and selected options.
For final decisions, cross-check with official guidelines or expert review.
Frequently Asked Questions
What’s the difference between a beautifier and a minifier?
A beautifier formats code for readability, while a minifier does the opposite—it removes whitespace and line breaks to reduce file size. Use a beautifier during development and a minifier for production deployment.
Does it modify the original code?
No. The beautifier only changes the formatting (whitespace and indentation) of your code. The actual logic remains unchanged. Strings, regular expressions, and other values are preserved exactly as they were.
Which indentation should I choose?
Follow your team’s or project’s coding conventions. 2 spaces (Google, Airbnb style) and 4 spaces are commonly used. Tabs offer the advantage of adjustable width based on personal preference.
What should I use these results for?
Use them for quick checks and comparisons. For critical decisions, verify with official sources.
Does it work on mobile?
Yes. It works on modern mobile browsers as well.