Free JavaScript Beautifier Online - Fast & Private Web Utility
Reformat compressed JavaScript into readable, indented code.
Runs entirely in your browser - your files are never uploaded
What is JavaScript Beautifier?
JavaScript Beautifier is a free, web-based utility designed for instant, local developer tools tasks. It allows users to compute, format, convert, or edit data directly in their browser without installing software or registering an account.
- 100% Free & Unlimited Usage
- 0% File Uploads (100% Client-Side Privacy)
- Instant Real-Time Calculations
- Mobile, Tablet & Desktop Compatible
How to use JavaScript Beautifier
Select or Enter Input
Provide your source file or type your values into JavaScript Beautifier.
Configure Settings
Adjust parameters, formatting options, or units in real-time.
Get Instant Output
Download the final processed file or copy the generated output.
Features & Overview of JavaScript Beautifier
Paste a bundled or minified script to get line breaks after statements, indentation that follows block depth, and readable spacing around braces - ideal for auditing a third-party snippet before you trust it.
String and regex literals are preserved verbatim so the formatting pass never changes program behaviour. Copy the output or download it as a .js file.
Frequently Asked Questions about JavaScript Beautifier
Answers to common questions regarding JavaScript Beautifier features, data privacy, and usage.
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