TypeScript Formatter

Beautify and format your TypeScript code online with configurable indentation.

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TypeScript Formatter
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Format TypeScript Open TS/TSX File... Clear Input Sample TS
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About the TypeScript Formatter Tool

Ensure your TypeScript (and TSX) code adheres to consistent style guidelines with this online TypeScript Formatter. Paste your code, upload a .ts or .tsx file, choose your preferred indentation, and get clean, readable, and maintainable code formatted using Prettier.

Why Format TypeScript?

Well-formatted TypeScript code offers numerous benefits:

  • Consistency: Enforces a uniform style across your projects and teams, reducing cognitive load.
  • Readability: Proper indentation, spacing, and line breaks make complex types, interfaces, classes, and functions easier to understand.
  • Maintainability: Clean code is simpler to modify, refactor, and debug over its lifecycle.
  • Collaboration: Reduces arguments over style and makes code reviews more focused on logic.

How to Use This Tool

  • Paste your TypeScript or TSX code into the input editor.
  • Alternatively, click "Open TS/TSX File..." to upload a file.
  • Select your desired "Indentation" style (Spaces or Tab) from the dropdown.
  • Click the "Format TypeScript" button.
  • The beautified TypeScript code will appear in the output editor.
  • If there are syntax errors in your input, the formatter may fail and display an error message.
  • Use the "Copy TS" or "Download TS" buttons to save the result (as a .ts file).

This tool leverages the powerful Prettier library, running securely in your browser, to apply opinionated yet widely accepted formatting rules.

Frequently Asked Questions

What does a TypeScript Formatter do?

A TypeScript Formatter automatically rewrites your TypeScript (.ts) or TypeScript XML/JSX (.tsx) code to follow a consistent set of style rules, focusing on indentation, spacing, line breaks, quote style, semicolon usage, etc., making it easier to read and maintain without changing its functionality.

Is my TypeScript code secure?

Yes. Formatting occurs entirely within your browser using JavaScript libraries. Your code is never sent to any server, ensuring privacy.

Can I customize formatting options beyond indentation?

This tool currently offers indentation customization (spaces vs. tabs, width). Prettier, the underlying library, has many other options (like semicolon usage, quote style, trailing commas). While not exposed in this simple UI, the formatting applied uses Prettier's widely accepted defaults for those other rules.

Does this tool check for TypeScript compilation errors?

No, this is a code formatter, not a TypeScript compiler (like `tsc`) or linter (like ESLint). It focuses purely on code style and structure. It will likely fail if the code has major syntax errors, but it won't catch type errors or logical issues.

Is this online TypeScript formatter free?

Yes, this tool is completely free to use.

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