JSX Formatter
FormattersFormat React JSX with Prettier's Babel parser. Handles hooks, class components, and HOCs. Configurable quotes, semicolons, and trailing commas. Browser-based.
About JSX Formatter
The JSX Formatter is a Prettier-powered, browser-based tool that instantly beautifies React JSX files into clean, consistently formatted output. Using Prettier's Babel parser, it handles JSX expressions, JSX spread attributes, self-closing tags, multi-line JSX returns, React hooks, class components, higher-order components (HOCs), and all modern React patterns. Configurable indentation and an 80-column print width produce output matching the conventions of leading React projects. All formatting runs in a Web Worker; your code never leaves the browser.
Features
- ✓Powered by Prettier's Babel parser — the standard for JSX formatting
- ✓Full JSX syntax: expressions, spread attributes, fragments (<>...</>), self-closing tags
- ✓Handles multi-line JSX returns with correct parenthesisation
- ✓Supports React hooks (useState, useEffect, useMemo, useCallback)
- ✓Formats class components, HOCs, forwardRef, and memo wrappers
- ✓Configurable indentation: 2 spaces, 4 spaces, or tab; print width 80
- ✓Semicolons enabled, double quotes — Prettier's recommended React defaults
- ✓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 TSX, JavaScript, or 20+ other formatters
- ✓Mobile-responsive layout with a dedicated Format button
- ✓100% client-side — your code never leaves the browser
Common Use Cases
- Beautifying React components pasted from a codebase with inconsistent formatting
- Formatting JSX snippets before adding them to documentation or tutorials
- Normalising multi-line JSX return statements and nested element indentation
- Cleaning up auto-generated JSX from scaffolding tools or AI code generation
- Preparing readable React component code for code reviews and pull requests
- Standardising formatting across a React component library
Frequently Asked Questions
QWhat React patterns does this support?
All standard React patterns — function components, class components, hooks, context providers, HOCs, forwardRef, memo, fragments, controlled and uncontrolled inputs, and JSX spread props.
QWhat is the difference between JSX Formatter and TSX Formatter?
The JSX Formatter uses Prettier's Babel parser for plain JavaScript JSX files (.jsx). The TSX Formatter uses Prettier's TypeScript parser for files that combine TypeScript types with JSX (.tsx).
QIs my code sent to a server?
No. All formatting runs locally in a Web Worker inside your browser. Nothing is transmitted to any server.