JavaScript Formatter
Free online JavaScript formatter. Paste your JS code and instantly beautify it with proper indentation and consistent structure.
About this tool
This online JavaScript formatter parses and reformats your code with consistent indentation and uniform structure. Any messy, minified, or poorly organized script is transformed into readable, well-structured JavaScript in one click. It removes unnecessary blank lines, fixes indentation, and normalizes spacing around operators and brackets — making the code easier to review, debug, or hand off to a teammate.
Use Cases
- Code ReviewsClean up messy scripts before sharing with teammates or opening a pull request.
- DebuggingReadable indentation and consistent spacing make it much easier to trace logic and spot bugs.
- Learning & DocumentationProperly formatted JavaScript is easier to read, understand, and include in documentation or tutorials.
How It Works
Paste Your JavaScript
Copy and paste your raw, minified, or unformatted JavaScript into the editor.
Click Format
Press the Format JavaScript button and the tool will reformat the code instantly.
Copy the Result
Copy the formatted output or start over with new code.
Questions & Answers
No. All formatting is done entirely in your browser. Your code never leaves your device.
Yes. The formatter supports modern JavaScript including ES2020+ features, arrow functions, destructuring, async/await, and more.
If the code cannot be parsed, the tool will display an error message so you can identify and fix the issue before formatting.