JavaScript Formatter - Beautify JS & TypeScript Code Online
Clean, format, and indent messy or minified JavaScript and TypeScript source code with custom spacing and quotes.
This tool runs in your browser.
Paste JavaScript to format.
How to use
- 01Paste JavaScript.
- 02Format it locally.
FAQ
Does this formatter support TypeScript and modern ESNext?
Yes. The formatting parser fully accommodates modern ES2024 features, JSX components, and TypeScript type declarations.
Will formatting alter runtime behavior or semantics?
No. Formatting is purely cosmetic and adjusts indentation, braces, and line breaks without altering runtime AST logic or variable scopes.
Is my proprietary source code uploaded anywhere?
No. All beautification executes client-side inside your local browser sandbox, ensuring absolute source privacy.