JavaScript Formatter & Beautifier - Pretty Print JS

Format and beautify JavaScript code online. Fix indentation, add proper spacing. Supports ES6+, JSX, and TypeScript. Free, private, works offline.

Indent:

Braces:

Preserve empty lines

JavaScript Input

Formatted JavaScript

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Frequently Asked Questions

All modern ES6+ syntax including arrow functions, destructuring, async/await, classes, template literals, and more.

Yes. The formatter can beautify minified or obfuscated JavaScript into readable, properly indented code.

Basic syntax errors are detected, but this is primarily a formatting tool. Use a linter for comprehensive validation.

Yes. All formatting happens in your browser using JavaScript. No code is sent to any server.

You can choose 2-space, 4-space, or tab indentation, and customize brace style and other formatting options.

Yes. The formatter handles TypeScript syntax and JSX/React code, including type annotations and component markup.

Same line (collapse) puts opening braces on the same line as declarations. New line (expand) places them on a separate line, following Allman or BSD style.

You can format any JavaScript snippet, even incomplete code. The formatter works with functions, expressions, or full programs.

No. Formatting only modifies whitespace, indentation, and line breaks. The actual execution and logic remain identical.

Formatting makes code more readable by adding whitespace. Minification does the opposite - it removes whitespace to reduce file size. Use our JavaScript Minifier for compression.

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