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Coding Tools
JavaScript Formatter
Format and beautify JavaScript source code.
Technical Documentation & User Guide
JavaScript Formatter Reference & Specifications
The JavaScript Formatter beautifies minified or unreadable code into indented, statement-per-line JavaScript. Reading a one-line minified script to understand its logic is painful; a quick format pass makes it approachable.
The output is safe, valid JavaScript that preserves the original behavior while making it editable.
Key Capabilities & Features
- Indents blocks and loops clearly.
- Splits long statements into readable lines.
- Preserves logic exactly.
Step-by-Step Instructions
- Paste the JavaScript you need to debug.
- Click Format code.
- Copy the readable version into your editor.
Real-World Developer & Design Workflows
- Investigating a minified third-party snippet.
- Recovering readability for an old script.
- Preparing code for a human to review.
Frequently Asked Questions
Is the formatted code safe to run?
Yes - only whitespace and line breaks change, so behavior is identical to the input.
Can it restore variable names from minified builds?
No - one-letter names stay one-letter; formatting only adds line structure, which is usually enough to follow the logic.