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HTML to JSX Converter

Convert HTML markup to JSX/React syntax with className, htmlFor, style object, and self-closing tag conversion.

Tested tool guide Tested browser tools Checked August 16, 2026

What HTML to JSX Converter does, with a checked example

HTML to JSX Converter rewrites an HTML fragment for placement inside React markup. It changes HTML attribute spellings such as `class` and `for` to `className` and `htmlFor`, converts inline `style` text into a JSX object expression, and closes tags that JSX cannot leave open. The common surprise is that this is a syntax conversion, not a component generator: surrounding imports, component code, JavaScript expressions, event handlers, and state still belong in the calling application.

Worked example

A concrete input and expected output from the current implementation.

Input

<div class="field"><label for="email">Email</label><input id="email" type="email"></div>

Expected output

<div className="field"><label htmlFor="email">Email</label><input id="email" type="email" /></div>

The HTML `class` and label `for` attributes become the corresponding JSX prop names. Because `input` has no closing tag in HTML but JSX requires explicit closure, it becomes self-closing.

How the result is produced

1

Attribute and style rewriting

The converter replaces HTML attribute spellings that conflict with JSX prop names, notably `class` with `className` and a label's `for` with `htmlFor`. It also turns an inline CSS declaration string into a JavaScript object expression for the `style` prop, including camel-cased property keys. The result represents JSX source, not computed DOM or CSS.

2

Explicit element closure

HTML permits void elements such as `input`, `img`, and `br` without a closing slash. JSX requires those elements to be explicitly self-closing, so the converter emits forms such as `<br />`. Normal parent-child nesting and text content remain markup. The converted fragment still needs to be placed where JSX is valid in the surrounding source.

Good uses

  • Translating a static HTML form before inserting it into a React component.
  • Converting copied prototype markup that contains `class`, label `for`, inline styles, and unclosed void elements.
  • Preparing an HTML fragment for a JSX file without manually correcting each incompatible attribute and tag.

Limits and checks

  • Inspect event attributes manually. An HTML handler string is not equivalent to a React event prop whose value is a JavaScript function.
  • Review complex inline styles, including custom properties and vendor-prefixed names, rather than assuming every CSS declaration maps cleanly to an object key.
  • Check the insertion point. Multiple top-level results may need a parent element or React fragment, and the converter does not supply application state or component logic.

Common questions

Does the result include a complete React component?

No. The useful result is converted JSX markup for insertion into a component. It should not be read as a promise of imports, a function declaration, props, state, or a `return` statement. Add the fragment to the appropriate component structure and ensure that its surrounding JavaScript syntax is valid.

Will converted inline styles always behave exactly like the original HTML styles?

Not necessarily. The converter can change a CSS declaration string into the object-shaped value expected by React's `style` prop, but it cannot verify the surrounding cascade, inherited rules, browser support, or application-level styling. Check CSS custom properties, vendor prefixes, and any declaration whose value depends on external styles or runtime data.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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