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JavaScript Formatter

Format and indent messy JavaScript code with syntax protection, template literal preservation, and zero script execution.

Shortcuts: Ctrl+Enter (Cmd+Enter) to format instantly.

How to Use the JavaScript Formatter

  1. Paste unformatted JavaScript or minified code into the Raw JavaScript Input area.
  2. Choose your preferred indentation spacing (2 spaces, 4 spaces, or Tabs).
  3. Click Format JavaScript or press Ctrl+Enter.
  4. Copy or download your formatted .js code.
100% Client-Side Privacy: Your data is processed locally in your browser and is not uploaded to our servers.

Online JavaScript Formatter: Beautify, Deobfuscate & Indent JS Code

The Todoal JavaScript Formatter is a fast, browser-native JavaScript and TypeScript beautifier designed to transform unindented, packed, or minified scripts into clean, human-readable code. Whether you are deobfuscating third-party script bundles, debugging minified frontend assets, reviewing API integration snippets, or formatting code for peer reviews, this tool restructures code blocks with standardized indentation (2 spaces, 4 spaces, or tabs) and clean line breaks.

Our client-side formatting engine handles modern ECMAScript features including arrow functions, async/await blocks, template literals (`...`), object destructuring, optional chaining (?.), and nullish coalescing. It also cleanly protects string literals, regular expression literals (/regex/g), and comment blocks from corrupted formatting.

Modern ES6+ Syntax Formatting

Properly indents classes, async generators, arrow functions, modules (import/export), and nested control flow structures with consistent indentation depth.

Protected Regex, Strings & Comments

Tokenizes and protects multi-line comments, regex patterns, and template strings containing embedded backticks or line breaks so their inner logic is preserved intact.

One-Click Download & Instant Clipboard Copy

Download formatted scripts as clean .js files or copy code to your clipboard with keyboard shortcuts (Ctrl+Enter).

100% In-Browser Privacy & Zero Relays

All script parsing and beautification occurs locally in browser memory. No proprietary source code, secrets, or API keys are ever transmitted over external networks.

Integrated JavaScript & Frontend Engineering Toolkit

Combine script formatting with production bundle optimization: compress scripts with the JavaScript Minifier and format JSON API data with the JSON Formatter. If you work with web tokens or encoded payloads, decode authorization headers with the JWT Decoder, transform binary data using the Base64 Decoder, or encode data with the Base64 Encoder.

For markup and styling, format HTML documents using the HTML Formatter, format stylesheets with the CSS Formatter, and test complex regular expressions with the Regex Tester. Access the entire developer catalog in the Developer Tools Suite.

How to Format JavaScript Code with Todoal

  1. Paste JavaScript: Paste messy, packed, or minified JavaScript into the Raw JavaScript Input editor.
  2. Select Indentation: Choose 2 spaces, 4 spaces, or 1 Tab based on your team's code style guide.
  3. Format Instantly: Click Format JS or press Ctrl+Enter.
  4. Export: Copy the beautified code to your clipboard or click Download .js to save the file.

Modern Async/Await & Generator Formatting

Standardizes indentation across asynchronous functions, promise chains, yield statements, and try/catch blocks for crystal-clear control flow analysis.

Object & Array Destructuring Alignment

Formats complex multi-line object destructuring patterns, spread operators (...), and parameter lists with clean comma spacing and brace alignment.

Client-Side Lexical Tokenization for JavaScript

Formatting JavaScript requires sophisticated lexical state tracking to distinguish division operators (/) from regular expression literals (/pattern/g) and template literals (\`${var}\`) from standard strings. Our in-browser tokenizer parses JavaScript code into safe token streams, standardizes statement semicolons and braces, and applies your chosen indentation depth (2 spaces, 4 spaces, or tabs) without altering the runtime execution logic of your code.

Deobfuscating and Formatting JavaScript Code

Debugging production script bundles, third-party libraries, or minified JavaScript files is challenging without proper formatting. The Todoal JavaScript Formatter deobfuscates and cleans raw scripts, restoring clean line breaks, consistent indentation depth (2 spaces, 4 spaces, or tabs), and readable control flow structures without altering code execution behavior.

Enhancing Code Maintainability and Readability

Clean code formatting is vital for effective peer code reviews, debugging legacy codebases, and maintaining enterprise web applications. The Todoal JavaScript Formatter restructures unformatted or minified script strings into clean, indented code with customizable spacing, ensuring developers can analyze complex algorithms and logic flows quickly.

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Frequently Asked Questions

Everything you need to know about this browser tool and privacy.

Does this tool execute my JavaScript code?
Never. The formatting engine operates as a static lexical tokenizer and AST structure formatter. It never runs eval(), Function(), or executable browser scripts on your code.
Are template literals, regular expressions, and comments preserved?
Yes. Multi-line template literals, string literals, regex patterns (/pattern/flags), and both single-line (//) and multi-line (/* */) comments are protected and preserved during formatting.
Can it format modern ES6+ JavaScript, TypeScript, and JSON?
Yes. It supports arrow functions, classes, async/await, modules (import/export), object destructuring, and nested structures.

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