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Smart HTML to JSX Converter

Convert HTML into clean React JSX instantly with automatic attribute conversion, formatting, and React best practices.

React ReadyJSX ConversionAttribute FixesLive PreviewCopy Ready

How to use

1

Paste or drop your HTML

Type, paste or drag in an .html file on the left. The converter starts immediately — a sample is loaded so you can see it in action.

2

Watch it convert live

JSX appears on the right as you type. class becomes className, for becomes htmlFor, void tags self-close, comments become {/* */}, and inline styles become objects.

3

Tune the output

Beautify, minify or preserve indentation; toggle the component wrapper and Next.js mode; choose your indent width. Everything updates instantly.

4

Review warnings & copy

Check the React warnings for inline handlers, deprecated tags and controlled-input gotchas, then copy the JSX or download it as a .jsx file.

Common JSX attribute changes

classclassName

class is a reserved JS keyword

forhtmlFor

for is a reserved JS keyword

readonlyreadOnly

JSX props are camelCased

tabindextabIndex

JSX props are camelCased

maxlengthmaxLength

JSX props are camelCased

colspan / rowspancolSpan / rowSpan

table cell spans camelCased

onclickonClick={fn}

events take a function, not a string

style="…"style={{…}}

style is a JS object, camelCased keys

HTML vs JSX, explained

What is JSX?

A syntax extension that lets you write HTML-like markup inside JavaScript. A compiler (Babel/SWC) turns it into React.createElement calls. It is expressive like HTML but governed by JavaScript rules.

HTML vs JSX

JSX requires every tag to be closed, uses camelCased attributes, renames class/for to className/htmlFor, embeds dynamic values with { }, and returns a single root (use a fragment for siblings).

Attribute conversion

Most HTML attributes map to a camelCased JSX prop. data-* and aria-* stay as-is. Inline style strings become objects. Event attributes take a function reference instead of a code string.

React best practices

Prefer named handler functions over inline strings, give list items keys, avoid deprecated tags, and keep markup declarative. This tool flags these so your converted JSX is production-ready.

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Frequently asked questions

Quick answers about this free online tool.

JSX (JavaScript XML) is a syntax extension for JavaScript used by React. It lets you write markup that looks like HTML directly inside your JavaScript, which the build step compiles to React.createElement() calls. JSX is not HTML — it follows JavaScript rules, so attribute names are camelCased (className, htmlFor), tags must be closed, and curly braces embed expressions. This tool converts plain HTML into valid, React-ready JSX automatically.

Because class is a reserved word in JavaScript (used to declare ES6 classes). Since JSX is JavaScript, React renames the HTML class attribute to className to avoid a conflict with the language keyword. When React renders, it maps className back to the real class attribute in the DOM, so your CSS and Tailwind utility classes work exactly the same — only the JSX attribute name changes.

For the same reason as className: for is a reserved JavaScript keyword (used in for loops). JSX therefore uses htmlFor for the label association attribute, and React renders it as the standard for attribute in the DOM. This tool converts for="id" to htmlFor="id" automatically so your <label> elements keep working with form fields.

You can paste full markup, but JSX components return a single tree, so a whole document (with <html>, <head>, <body>) is not directly usable as a component. Convert the body content or individual sections instead. This tool drops the doctype, converts comments to {/* */}, fixes attributes and self-closing tags, and — with the component toggle — wraps multiple root elements in a fragment (<>…</>) so the output is valid. Move <script>/<style> blocks into proper React patterns.

Yes. Enable Next.js mode and the converter rewrites <img> to next/image's <Image> and adds the import, flagging that width, height and alt are required. The rest of the JSX is standard React, so it works in any Next.js component (Pages or App Router). Tailwind classes are preserved unchanged — only class becomes className.