JavaScript Formatter
Format and beautify JavaScript with consistent indentation, entirely in your browser.
Paste minified or messily-indented JavaScript below - this tool reformats it with consistent, readable indentation.
For the opposite operation - compacting JavaScript for production - see the existing JavaScript Minifier.
What Does This Tool Do?
It re-indents and reformats JavaScript source code with consistent spacing, making minified or inconsistently-formatted code readable again - useful when debugging third-party scripts or cleaning up code from multiple contributors.
Why Use This Tool?
Reading unformatted or minified JavaScript is difficult - a formatter restores consistent indentation so you can actually follow the code's structure and logic.
How to Use It
- Paste your JavaScript code.
- Click Format.
- Copy the reformatted, readable code.
Limitations
This handles standard JavaScript syntax formatting - it does not execute your code, so it can't catch runtime errors, only structural/syntax issues that prevent parsing.