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smartdevbox
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JavaScript Formatter — Beautify JS & TypeScript Code Online

JavaScript Formatter uses Prettier with Babel parsing to reformat JavaScript and TypeScript code. It applies consistent indentation, semicolons, and quote style.

Common Use Cases

  • Formatting minified JavaScript for readability
  • Standardizing code style before committing to version control
  • Beautifying TypeScript code snippets from documentation

Frequently Asked Questions

Does the JavaScript formatter support TypeScript?

Yes. SmartDevBox uses Prettier with the Babel parser, which supports modern JavaScript and TypeScript syntax including JSX, async/await, decorators, and optional chaining.

Privacy & Security

This tool runs entirely in your browser using client-side JavaScript. No data is sent to a server — your input never leaves your machine. SmartDevBox has no account system, no usage tracking, and no paid tier. See the Privacy & Security page for full details.

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