HTML to JSX Converter

Paste your HTML into OpenToolLab's HTML to JSX converter and click Convert to JSX. The tool rewrites class to className, for to htmlFor, converts inline styles to objects, camelCases attributes, and self-closes void elements — producing valid JSX.

Paste the HTML file's contents into the converter and choose 'React component' mode. You get a function component with export default, ready to drop into a .jsx or .tsx file.

HTML is plain markup; JSX is JavaScript that looks like HTML and compiles to React.createElement calls. JSX differs in details: class becomes className, for becomes htmlFor, inline styles become objects, and void elements like img must self-close.

JSX is compiled by tools like Babel or esbuild into React.createElement calls (or the new react/jsx-runtime). The browser never sees JSX directly — it sees the JavaScript the compiler produces.

Create a .jsx (or .tsx) file in your React project and write JSX inside. To convert existing HTML into that file, paste it into this converter, copy the JSX output, and save it as your new component file.

React Native has no DOM, so HTML tags like div and span do not exist. This converter produces web JSX; for React Native you must replace elements with View, Text, Image, and the equivalent style objects — often via a library that renders HTML to native components.

JSX is used to describe React UI declaratively. It is the primary way React developers write components because it reads like HTML while giving access to JavaScript expressions inside curly braces.

JSX is far more readable for UI than nested React.createElement calls. You write markup that mirrors the rendered structure and can embed logic in {} expressions — with full type safety in TypeScript files.

Import the component where you need it: import App from './App'. The component returns JSX, which React renders. A .tsx file adds type checking to the same JSX syntax.

Not exactly — JSX is a syntax extension for JavaScript (and TypeScript). It has no runtime of its own; a compiler transforms it into JavaScript function calls before the browser runs it.

Yes, with limitations. Inside JSX, JavaScript expressions go in curly braces {expr}. Statements like if/for are not allowed directly in markup, but you can use them before the return or with ternaries, maps, and IIFEs.

Files ending in .jsx contain JSX syntax; TypeScript versions use .tsx. React tooling (Vite, Create React App, Next.js) compiles these files automatically, so you can write JSX directly in components.