TypeScript Formatter Tool

TypeScript formatter: beautify TS and TSX online

A TypeScript formatter lays out interfaces, generics, JSX, and async functions so code review and incident triage are faster. Paste a `.ts` or `.tsx` snippet from a PR, Stack Overflow, or minified bundle fragment—then copy readable output back to your editor.

This is a layout pass, not a type checker. Run `tsc` or your IDE for semantic errors after formatting.

How to use this converter

1. Paste TypeScript or TSX—including React components with typed props.
2. Choose indent width and format to expand blocks.
3. Minify only for quick size experiments, not production bundles.
4. Copy results; run ESLint and `tsc` before committing.

Before and after examples

TSX, generics, and discriminated unions

React components with `interface Props`, hooks, and children format like standard functions with extra JSX tokens. Generic utilities such as `type Result<T> = ...` benefit from line breaks that reveal union members.

Decorators, `namespace`, and experimental syntax may fail parsing depending on your snippet—strip unsupported syntax or format in the IDE that matches your compiler version.

When to use the JavaScript formatter instead

Plain `.js` files without types belong on the JavaScript formatter page. Mixed codebases often format TSX here and plain scripts there. JSON literals embedded in TS should be validated with the JSON formatter separately.

API keys and proprietary code

Formatting runs locally, but avoid pasting production secrets into shared screens. Redact tokens in fetch headers and connection strings before cleanup.

Frequently asked questions