JavaScript Formatter — Free Online Tool

Clean and Standardize Your JavaScript

Whether you're refactoring a messy codebase or formatting a quick snippet from Stack Overflow — ToolMateX’s JavaScript Formatter instantly makes your code cleaner, easier to read, and compliant with your chosen style.

Indentation Control

Prefer tabs or 4 spaces? Want compact formatting with just 2 spaces? You’re in control. Select tab indentation or choose from 1 to 10 spaces to perfectly match your project’s needs.

Style Preferences

• ✅ Toggle semicolons on or off
• ✅ Choose single quotes or double quotes
• ✅ Customize both preferences together

These features help you match your linter rules (like ESLint, Prettier configs, or Airbnb style guide) without writing configs manually.

Who Uses This Tool?

• 🧑‍💻 JavaScript and TypeScript developers
• 📦 Dev teams working on collaborative frontend code
• 📚 Students and coding bootcamp learners
• 🔍 QA engineers inspecting inline or minified scripts
• 📘 Content creators and technical writers sharing code

When to Use It

• ✔️ Fix ugly or one-liner JS from third-party sources
• ✔️ Auto-format snippets for documentation or blogging
• ✔️ Refactor code before a pull request
• ✔️ Match your project’s exact formatting rules

How to Use the JS Formatter

1. Paste or type your JavaScript into the input area
2. Choose tab or space indentation (with size)
3. Toggle semicolons and quote style as needed
4. See formatted output instantly on the right
5. Copy the output and use it anywhere

Why Use ToolMateX?

ToolMateX tools are fast, distraction-free, and developer-focused. No tracking, no ads, no accounts — just what you need, when you need it.

• 🚀 Instant formatting
• 🛡️ 100% local and secure
• 🧠 Built with real developer workflows in mind
• 🆓 Completely free