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.
⚡Code Quality & Script Formatting
The Comprehensive Guide to JavaScript Beautification & Deobfuscation
Discover how lexical tokenization restores indentation to minified scripts, how to audit third-party dependencies safely in-browser, and best practices for modern ECMAScript code hygiene.
🔍 Deobfuscating Minified & Bundled Scripts
When troubleshooting production exceptions or auditing third-party npm packages, developers often have only minified, single-line bundle dumps. Unformatted scripts make inspecting async control flow, variable scoping, and callback stacks nearly impossible.
Our client-side JavaScript Formatter processes raw script strings through an AST lexical parser. It safely separates statements, formats async/await chains, expands nested arrow functions, and applies standard 2-space or 4-space indentation without mutating runtime logic.
🔒 Zero-Telemetry Local Sandbox Security
Pasting internal scripts, environment configuration files, or proprietary business logic into external online formatters exposes your organization to severe IP leaks.
Todoal runs 100% within your local browser memory sandbox. No source files, tokens, or script snippets are ever transmitted across external cloud networks.
Integrated JavaScript & Full-Stack Tool Ecosystem
Connect script beautification with Todoal’s full array of development, debugging, and compression tools:
🗜️ Production Script Compression
Compress your JavaScript bundles and strip debugging logs before production deployment with our JavaScript Minifier.
📦 API Data Formatting & Validation
Format and beautify incoming JSON responses with the JSON Formatter.
🔑 Authentication & Token Inspection
Decode and verify JWT claims with the JWT Decoder, or process binary strings using the Base64 Decoder.
🧪 Pattern Testing & Markup
Test regular expressions with real-time capture groups using our Regex Tester, and format HTML markup via HTML Formatter.
Supported Modern JavaScript & ECMAScript Constructs
| Syntax Construct | Formatting Behavior | Benefits |
|---|
| Async / Await & Promises | Expands promise chains and indents try/catch blocks. | Eliminates callback pyramid-of-doom readability issues. |
| Destructuring & Rest/Spread | Normalizes spacing around curly braces and object parameters. | Provides crystal-clear visibility into imported modules and props. |
| Template Literals | Protects backtick string interpolations intact without splitting variables. | Preserves multiline strings and variable substitution. |
