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HTML to React JSX Converter - Online Quick Migration

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HTML to React JSX Converter

Instantly convert your HTML markup into React-compatible JSX syntax. Handles class → className, inline styles, event handlers, self-closing tags, and more.

Input — HTML 0 lines
Output — JSX 0 lines
Ready to convert class → className: 0 for → htmlFor: 0 style converted: 0 event handlers: 0 self-closing tags: 0 comments: 0

Frequently Asked Questions

This tool automatically transforms standard HTML markup into React-compatible JSX syntax. It performs essential conversions including: renaming class to className, for to htmlFor, converting inline CSS styles to JSX style objects, transforming event handlers (like onclick → onClick), closing self-closing tags (like <br> → <br />), converting HTML comments to JSX comments, and handling various camelCase attribute conversions such as tabindex → tabIndex and readonly → readOnly.

JSX is a syntax extension for JavaScript used by React. While it looks similar to HTML, there are important differences. JSX uses className instead of class because class is a reserved keyword in JavaScript. Similarly, for becomes htmlFor for the same reason. JSX also requires all tags to be properly closed (including void elements like <img>), uses camelCase for event handlers and many attributes, and requires inline styles to be expressed as JavaScript objects rather than CSS strings. Converting your HTML ensures it works correctly in React components.

In HTML, inline styles are written as a CSS string: style="color: red; font-size: 16px;". In JSX, styles must be a JavaScript object with camelCase property names: style={{ color: 'red', fontSize: '16px' }}. Our converter automatically parses your CSS declarations, converts property names to camelCase (e.g., font-size → fontSize, background-color → backgroundColor), and wraps the values in quotes to produce valid JSX style objects.

The converter supports a comprehensive range of DOM event handlers, including: onclick → onClick, ondblclick → onDblClick, onchange → onChange, onsubmit → onSubmit, onkeydown → onKeyDown, onkeyup → onKeyUp, onmousedown → onMouseDown, onmouseover → onMouseOver, onfocus → onFocus, onblur → onBlur, onscroll → onScroll, onload → onLoad, onerror → onError, touch events, drag events, animation events, and many more.

While this converter handles the most common HTML-to-JSX transformations, there are some limitations. Dynamic JavaScript expressions embedded in HTML (like templating syntax from other frameworks) may not be converted correctly. Complex SVG elements with namespace attributes (like xml:space → xmlSpace) are partially supported. The converter focuses on syntax transformation and does not validate whether your HTML is semantically correct. It also cannot convert framework-specific directives (like Vue's v-if or Angular's *ngFor) into React equivalents. For best results, start with clean, well-formed HTML.

Yes! In JSX, every tag must be closed — including void (self-closing) elements. This means <br> must become <br />, <img src="..."> must become <img src="..." />, and so on. Our converter automatically detects void elements (area, base, br, col, embed, hr, img, input, link, meta, param, source, track, wbr) and ensures they have the required closing slash. This is one of the most common issues developers face when migrating HTML to React, and our tool handles it seamlessly.

You can convert both! The tool works with complete HTML documents and partial HTML fragments alike. However, keep in mind that a full HTML document typically includes elements like <!DOCTYPE>, <html>, <head>, and <body> tags — these are not typically used inside React components (React renders into a single root element within the existing HTML document). For React component migration, you'll most commonly convert HTML fragments representing the UI structure that lives inside your component's return statement.

Yes, this HTML to JSX converter is completely free to use with no usage limits. All conversion happens directly in your browser — your HTML code never leaves your device and is never sent to any server. You can convert as many files or snippets as you need, of any size. There's no registration required, no API keys, and no hidden costs. We built this tool to make the React migration process smoother for developers everywhere.
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