What is a JavaScript formatter?
A JavaScript formatter takes minified code and spreads it out with indentation, so functions, blocks and statements become readable. Debugging and editing become far easier when you can see the structure.
This tool also minifies: it strips whitespace and comments while keeping strings and templates intact, so the compact result still runs exactly the same.
How to use this tool
- Paste your JavaScript.
- Click Format JS to beautify it.
- Click Minify to compress it.
- Copy whichever version you need.
What it handles safely
- Single, double and template-quoted strings.
- Line and block comments.
- Nested braces and statements.
Keep both versions
Format for development and minify for deployment. Source control can keep the readable copy while your build process ships the compact one.
Frequently Asked Questions
It takes minified JavaScript and adds line breaks and indentation so the structure is readable. Functions, blocks and statements line up clearly.
No. The formatter preserves strings, template literals and comments exactly, so the code behaves identically after formatting.
Yes. The Minify button strips whitespace and comments while keeping strings intact, producing a compact version for production.
It is a safe tokenizer, not a full parser. It handles strings, comments, braces and statements well, but exotic syntax may not format perfectly.
True minification also shortens variable and function names, which needs a full compiler. This tool focuses on whitespace and comments only.
No. Everything runs in your browser. Your code never leaves your device.