TSX Formatter
FormattersFormat TSX with Prettier's TypeScript parser. Preserves typed props, generics in JSX, React Server Component syntax, and full TypeScript 5.x. Browser-based.
About TSX Formatter
The TSX Formatter is a Prettier-powered, browser-based tool that instantly beautifies TypeScript React (.tsx) files while preserving all type information. Using Prettier's TypeScript parser, it handles typed component props (generic interfaces), generic JSX expressions, React Server Component patterns, TypeScript 5.x features (satisfies, const type params, decorators), hooks with typed state, and JSX spread with typed attributes. All formatting runs in a Web Worker; your code never leaves the browser.
Features
- ✓Powered by Prettier's TypeScript parser — preserves all type annotations in JSX
- ✓Handles typed props via interface/type alias, including optional and generic props
- ✓Supports generic JSX expressions: Component<{id: number}> patterns
- ✓Full TypeScript 5.x support in JSX context: satisfies, as const, type assertions
- ✓Handles React Server Components (async function components) and use client/server pragmas
- ✓Formats React hooks with typed state (useState<T>, useRef<T>, useReducer<S,A>)
- ✓Configurable indentation: 2 spaces, 4 spaces, or tab; print width 80
- ✓Web Worker execution — formatting never blocks the UI
- ✓Syntax-highlighted editor for both input and output
- ✓One-click clipboard copy of formatted output
- ✓Real-time byte-savings stats (input vs output size)
- ✓Language picker — instantly switch to JSX, TypeScript, or 20+ other formatters
- ✓Mobile-responsive layout with a dedicated Format button
- ✓100% client-side — your code never leaves the browser
Common Use Cases
- Formatting Next.js App Router page and layout components before committing
- Beautifying TypeScript React components copied from a codebase with inconsistent style
- Normalising typed props, generics, and JSX indentation in a component library
- Cleaning up AI-generated TSX code before review
- Formatting TSX snippets for documentation, tutorials, or blog posts
- Standardising formatting across a React + TypeScript monorepo
Frequently Asked Questions
QHow is this different from the JSX Formatter?
The TSX Formatter uses Prettier's TypeScript parser, which understands TypeScript type syntax inside JSX — typed props, generic components, type assertions, and TypeScript 5.x features. The JSX Formatter uses the Babel parser and handles plain JavaScript JSX.
QDoes it support React Server Components?
Yes — async function components and 'use client' / 'use server' directives are handled as valid TSX syntax.
QIs my code sent to a server?
No. All formatting runs locally in a Web Worker. Nothing is transmitted externally.