HTML to JSX Converter

Convert HTML to React JSX: className, htmlFor, self-closing tags and style objects

What is it and how does it work?

An HTML to JSX converter rewrites plain HTML into the JSX syntax that React components use, fixing the differences that would otherwise make the markup invalid in a React file. JSX looks almost identical to HTML, but a handful of attributes and rules are different because JSX is really JavaScript: class becomes className, for becomes htmlFor, every tag must be explicitly closed, and inline styles are written as a JavaScript object rather than a string. Pasting real HTML and getting valid JSX back saves the tedious, error-prone job of converting it by hand.

This is exactly the chore that comes up constantly when bringing a design, an email template or a snippet from anywhere on the web into a React project. Doing it manually means hunting down every class attribute, self-closing every <img> and <br>, and reshaping style="color:red" into style={{ color: 'red' }} — easy to miss in a large block and frustrating to debug when the build fails. This tool applies all those transformations in your browser, so you get paste-ready JSX without sending your markup anywhere.

Common use cases

• Porting a design to React: paste HTML from a mockup or template and get JSX you can drop straight into a component.
• Reusing a snippet: convert HTML copied from the web so it works inside a React file without manual fixes.
• Migrating markup: turn an existing static page's HTML into JSX as part of moving it into a React app.

Frequently asked questions

Why does class become className in JSX?

Because JSX compiles to JavaScript, and class is a reserved word in JavaScript. React uses className instead to set the element's class. Similarly, for (reserved in label elements) becomes htmlFor. The converter renames these automatically so the JSX is valid.

How are inline styles handled?

In HTML a style is a string like "color: red; font-size: 14px". In JSX it must be a JavaScript object with camelCased properties: style={{ color: 'red', fontSize: '14px' }}. The converter reshapes the string into this object form, including converting hyphenated property names.

Why must every tag be closed in JSX?

JSX requires every element to be explicitly closed, so void elements like <img>, <br> and <input> become self-closing (<img />). HTML is lenient about this, but JSX will not compile otherwise, which is why the converter adds the closing slashes.

Does it handle HTML comments and other quirks?

JSX comments use a different syntax ({/* ... */}) than HTML comments (<!-- ... -->), and a few other attributes differ too. A good converter translates the common cases; for unusual markup, review the output, since some edge cases may still need a manual touch.

Developer

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