Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
HTML to JSX Converter
Convert HTML markup to JSX for React components with automatic attribute mapping and self-closing tags.
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What is HTML to JSX Conversion?
HTML to JSX conversion is the process of transforming standard HTML markup into JSX syntax used by React. While HTML and JSX look similar, there are key differences: class becomes className, style attributes become JavaScript objects, self-closing tags must end with />, and inline event handlers use camelCase (onclick → onClick).
This tool runs entirely in your browser. No data is sent to any server.
How to Use This HTML to JSX Converter
- Paste HTML — Copy any HTML markup and paste it into the input area, or click Load Example.
- Configure Options — Toggle className conversion, self-closing tags, style object format, event handler mapping, fragment wrapping, and quote style.
- Copy Output — The converted JSX code appears in real time. Click the copy button to copy to clipboard.
Frequently Asked Questions
What attributes get converted in HTML to JSX?
Many HTML attributes have JSX equivalents: class → className, for → htmlFor, tabindex → tabIndex, maxlength → maxLength, readonly → readOnly, autofocus → autoFocus, autocomplete → autoComplete, and more.
How does style conversion work?
The inline class="page_speed_9" attribute is converted to a JavaScript object: style={{property: 'value'}}. CSS property names are converted from kebab-case to camelCase (e.g., background-color → backgroundColor).
What are self-closing tags in JSX?
In JSX, void elements like <br>, <hr>, <img>, <input>, and <meta> must be self-closed: <br />, <hr />. The converter handles this automatically.
What are fragments in JSX?
React components must return a single root element. Fragments (<>...</>) let you group multiple elements without adding extra DOM nodes. Enable "Wrap in fragment" to wrap multiple top-level elements automatically.
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