About TypeScript Formatter

Format and beautify your TypeScript code with this free online tool.

Format TypeScript declarations and JavaScript logic together, including interfaces, types, generics, enums, and TSX-capable syntax.

Key features

  • Formatting purpose Format TypeScript declarations and JavaScript logic together, including interfaces, types, generics, enums, and TSX-capable syntax.
  • Supported source Paste a .ts fragment or file whose syntax is supported by the TypeScript parser used on the page.
  • Style controls Choose indentation, wrapping, quotes, semicolons, and other style preferences where available.
  • Formatted result The output normalizes both type-level and runtime syntax for easier review and maintenance.

How to use TypeScript Formatter

Follow this workflow to work with TypeScript source code safely and accurately.

  1. Paste or enter the source Paste a .ts fragment or file whose syntax is supported by the TypeScript parser used on the page.
  2. Choose formatting rules Choose indentation, wrapping, quotes, semicolons, and other style preferences where available.
  3. Format the source Run the formatter after the source parses successfully. It will apply presentation rules without intentionally changing the parsed structure.
  4. Review and copy The output normalizes both type-level and runtime syntax for easier review and maintenance.

Usage tips

  • Formatting does not run tsc; compile the result to find type and module errors.
  • Use the JSX/TSX parser mode for React components with angle-bracket syntax.
  • Keep the repository formatter configuration as the source of truth for committed code.

Frequently asked questions

Format TypeScript declarations and JavaScript logic together, including interfaces, types, generics, enums, and TSX-capable syntax.
Paste a .ts fragment or file whose syntax is supported by the TypeScript parser used on the page.
Choose indentation, wrapping, quotes, semicolons, and other style preferences where available.
New TypeScript proposals, decorators, framework macros, or invalid type syntax may require a newer or specialized parser.