Formatting cleans unformatted or minified JavaScript into well-structured, human-readable code. It establishes consistent indentation, quote styling, and bracket placement, making code easier to read, debug, and review in pull requests.
DEVELOPER & CODE·Client-Side (100% Private)
JavaScript Formatter & Beautifier
Format, beautify, and indent JavaScript and TypeScript code with customizable spacing, quote normalization, semicolon enforcement, and syntax diagnostics.
Initializing JavaScript Formatter & Beautifier...
Pipe output to another tool:
✓
Zero Server Storage Guarantee
Data entered into this tool is processed 100% locally within your browser. Nothing is ever sent to or logged on any server.
FREQUENTLY ASKED QUESTIONS
Frequently Asked Questions about JavaScript Formatter & Beautifier
Quick answers to common questions about usage, conversion rules, privacy guarantees, and best practices.
Why should I format or beautify JavaScript code?
Can this formatter detect syntax errors in JavaScript or JSX?
Yes. As you type or paste code, the built-in parser validates syntax in real time and highlights syntax errors, unclosed brackets, or invalid tokens with specific line and column pointers.
What configuration options can I customize in this formatter?
You can customize tab indentation width (2 or 4 spaces, or hard tabs), single vs. double quote normalization, trailing comma rules (ES5, none, or all), and semicolon insertion or omission.
RELATED UTILITIES
More from Developer & Code
DEVELOPER & CODE
JSON to TypeScript Generator
Instantly convert raw JSON objects into clean, strongly typed TypeScript interfaces or type aliases.
#typescript#json#interface
DEVELOPER & CODE
TypeScript to JavaScript Converter
Convert and transpile TypeScript and TSX code into clean, executable JavaScript with target versions from ES5 to ESNext, module formats, and JSX modes.
#typescript#javascript#transpiler
DEVELOPER & CODE
TSConfig Generator & Preset Builder
Interactively generate and configure tsconfig.json files with battle-tested presets for Vite, Next.js, Node ESM, NPM libraries, and strictest type checking.
#typescript#tsconfig#generator