Free HTML to JSX Converter

Convert HTML markup to valid JSX syntax for use in React components and projects. Free, fast, and works entirely in your browser with no sign-up required.

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HTML to JSX Converter

Convert HTML to JSX/TSX for React. Handles attributes, styles, SVG optimization, event handlers, and component wrapping.

Conversion Options

Ctrl+Enter

HTML Input

Conversion Reference

HTML Attributes

classclassName
forhtmlFor
tabindextabIndex
readonlyreadOnly
maxlengthmaxLength
disableddisabled={true}
contenteditablecontentEditable
autocompleteautoComplete

Event Handlers

onclickonClick
onchangeonChange
onsubmitonSubmit
onfocusonFocus
onkeydownonKeyDown
onmouseenteronMouseEnter
ondblclickonDblClick
onpointerdownonPointerDown

SVG Attributes

stroke-widthstrokeWidth
fill-rulefillRule
clip-pathclipPath
font-sizefontSize
text-anchortextAnchor
stop-colorstopColor
viewboxviewBox
enable-backgroundenableBackground

Other Conversions

style="..."style={{...}}
<!-- ... -->{/* ... */}
<br><br />
<img ...><img ... />
<input ...><input ... />
innerHTML="..."dangerouslySet...
data-id="x"data-id="x"
aria-label="x"aria-label="x"

About HTML to JSX Converter

This tool converts HTML to valid JSX/TSX syntax for React components. It handles all the differences between HTML and JSX including SVG attributes.

Features:

  • JSX and TypeScript (TSX) output formats with proper typing
  • Granular conversion options (class, for, styles, booleans, events, SVG)
  • SVG attribute optimization (60+ SVG-specific conversions)
  • Event handler extraction with context-aware TypeScript typing
  • Component wrapping (function or arrow function) with props interface
  • Three view modes: Output, Diff, and Side-by-Side comparison
  • Auto-convert mode with 400ms debounce for real-time feedback
  • Conversion statistics tracking all changes made
  • Bulk conversion for multiple HTML snippets with Download All
  • File upload support (.html, .htm, .svg, .xml files)
  • Multiple sample templates (General HTML, SVG, Event Handlers)
  • Copy to clipboard and download as .jsx or .tsx
  • Conversion history saved to localStorage with relative timestamps
  • Keyboard shortcut: Ctrl/Cmd + Enter to convert
  • Advanced options: indent size, quote style, comment removal
  • innerHTML to dangerouslySetInnerHTML conversion
  • Preserves data-* and aria-* attributes unchanged

Privacy First: All processing happens locally in your browser. Your code is never sent to any server.

Frequently Asked Questions

What is the HTML to JSX converter?

The HTML to JSX converter is a free online tool that transforms HTML markup into valid JSX syntax for use in React components.

Is HTML to JSX free?

Yes, it is completely free with no registration required. All conversion happens client-side in your browser.

What changes does it make?

The HTML to JSX converter changes class to className, converts inline styles to objects, self-closes void elements, and handles other HTML-to-JSX differences.

Is my data safe with this tool?

Absolutely. The HTML to JSX Converter processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Does the HTML to JSX Converter work on mobile devices?

Yes, the HTML to JSX Converter is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

Do I need to create an account to use this tool?

No account or registration is needed. Simply open the HTML to JSX Converter in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

How do I use the HTML to JSX Converter?

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

Which browsers are supported?

The HTML to JSX Converter works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

What is the difference between HTML and JSX?

JSX looks almost identical to HTML, but it is JavaScript syntax compiled into React elements, so it follows JavaScript's rules instead of the browser's. The practical differences are where copied markup breaks: HTML's "class" attribute becomes "className" and "for" becomes "htmlFor" because both words are reserved in JavaScript. Multi-word attributes like "tabindex" and "maxlength" are camelCased to "tabIndex" and "maxLength," inline "style" strings become JavaScript objects, and void tags such as "<img>" and "<br>" must be explicitly self-closed. JSX also expects a single root element, so sibling tags need a wrapper or Fragment. These mechanical rewrites are easy to miss by hand across a large file. Paste your HTML above and the converter applies every one of these rules instantly so the output drops straight into a React component.

Why does React say 'class' is an invalid DOM property?

React shows that warning because "class" is a reserved keyword in JavaScript, and JSX compiles to JavaScript rather than to raw HTML. To avoid clashing with the language, React renames the attribute to "className," which it then maps back to the real "class" attribute in the DOM at render time. The same logic applies to "for" on label elements, which becomes "htmlFor." If you paste HTML straight into a component without renaming these, React either warns in the console or fails to apply your styling, since it ignores the unrecognized "class" prop. Fixing every instance manually across a long template is tedious and easy to get wrong. This converter renames "class" to "className" and "for" to "htmlFor" automatically, so paste your markup above and the warnings disappear.

How do I convert an inline HTML style attribute to a JSX style object?

In HTML, inline styles are a single string like style="margin-top: 10px; font-size: 14px". JSX instead expects a JavaScript object whose keys are camelCased CSS properties and whose values are strings, wrapped in double braces: style={{ marginTop: '10px', fontSize: '14px' }}. The outer braces tell JSX you are passing a JavaScript expression, and the inner braces are the object itself. Hyphenated property names become camelCase, so "margin-top" turns into "marginTop" and "background-color" into "backgroundColor." Converting these by hand is error-prone, especially with many declarations or vendor prefixes. This tool parses every inline style and rewrites it into a correct JSX object automatically, camelCasing the properties and quoting the values for you. Paste markup that contains style attributes above and check the output panel to see the converted objects.

Why won't an SVG pasted from a design tool compile in React?

SVG markup copied from design tools or icon sets uses hyphenated attribute names like fill-rule, stroke-width, and clip-path, which are valid in HTML but invalid as JSX props. Because JSX is JavaScript, a hyphen reads as a minus sign, so React rejects these attributes until they are camelCased to fillRule, strokeWidth, and clipPath. The same applies to many filter and gradient attributes inside complex SVGs. Missing even one usually breaks the build or makes the icon render blank, and large icons can have dozens of them. This converter recognizes SVG attributes and camelCases them automatically while preserving the structure and viewBox, so the icon renders correctly the moment you paste it into a component. Drop your SVG into the input above and copy the React-ready markup from the output.

Can I wrap the converted markup in a React component automatically?

Yes. Beyond translating attributes, the converter can shape the output into a ready-to-use component instead of leaving bare markup. You can emit a plain .jsx file or a TypeScript .tsx version, and wrap the result as a named function component or an arrow function, with the matching React import statement generated for you. If your snippet has several top-level elements, Fragment wrapping returns them as a single node so the component is valid without an extra div. You can also set indentation size, choose single or double quotes, and pull repeated values out as props. The result panel adds a line-by-line diff and side-by-side view so you can verify each change, and a bulk tab converts several snippets in one pass. Set your output options above, then copy or download the finished component.

Embed This Tool

Add a free, live version of this widget to your own website or blog post — it runs entirely in your visitors' browsers, with a credit link back to The Toolbox.

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<iframe src="https://getthetoolbox.com/embed/html-to-jsx" title="Free HTML to JSX Converter — The Toolbox" width="100%" height="380" style="max-width:480px;border:1px solid #e2e8f0;border-radius:12px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0"><a href="https://getthetoolbox.com/code-tools/html-to-jsx?utm_source=embed&utm_medium=widget" target="_blank" rel="noopener">Free HTML to JSX Converter</a> by The Toolbox</p>

About the HTML to JSX Converter

The HTML to JSX Converter turns plain HTML markup into valid JSX you can drop straight into a React component. Paste a snippet, a full page section, or an SVG icon, and it rewrites the parts of HTML that React rejects — renaming class to className, closing void tags like <img> and <br>, and converting inline style strings into the style objects React expects. It is built for front-end developers porting a static template, designers handing markup to a React team, and anyone migrating an old page into a modern component-based UI without fixing every attribute by hand.

The converter runs entirely in your browser. Nothing you paste is uploaded or stored on a server, so proprietary markup and unreleased pages stay on your machine. There is no sign-up, no usage cap, and no install — your conversion history is saved only in your own browser's local storage (up to the most recent 30 entries) and never leaves the device.

What the converter rewrites

JSX looks like HTML but follows JavaScript's rules, and the small differences are exactly where hand-copied markup breaks. This tool handles the common ones automatically:

  • Reserved-word attributesclass becomes className and for becomes htmlFor, since class and for are reserved in JavaScript.
  • camelCase attribute names — multi-word attributes such as tabindex, maxlength, colspan, and cellpadding are renamed to tabIndex, maxLength, colSpan, and cellPadding.
  • Inline styles — a style="margin-top: 10px; font-size: 14px" string is converted to a JSX object like {{ marginTop: '10px', fontSize: '14px' }}.
  • Self-closing tags — void elements (img, br, hr, input, meta) are closed with a trailing slash so JSX parses them.
  • SVG attributes — hyphenated SVG properties such as fill-rule and stroke-width are camelCased to fillRule and strokeWidth.
  • Event handlers — inline onclick is rewritten to onClick, with optional handler stub templates so the markup compiles.
  • Boolean attributes, comments, and data/aria — booleans are normalized, HTML comments can be stripped or kept, and data-* and aria-* attributes are preserved as-is.

Output options and how to use it

Paste your HTML on the left and the JSX appears instantly on the right; you can also enable auto-convert or press Ctrl+Enter. Beyond the raw conversion, you control the shape of the output:

  • JSX or TSX — emit a plain .jsx file or a TypeScript .tsx version.
  • Component wrapper — leave the markup bare, or wrap it as a named function component or arrow function, with optional React import statements generated for you.
  • Fragment wrapping — wrap multiple top-level elements in a Fragment so they return as a single node.
  • Prop extraction and formatting — pull repeated values out as props, and set indentation size and single- or double-quote style.

The result panel offers an output view, a line-by-line diff against your input, and a side-by-side comparison, plus a small stats summary counting attributes, styles, events, SVG attributes, self-closed tags, and comments changed. Copy the JSX to your clipboard or download it as a file. A bulk tab converts several snippets in one pass.

Why convert HTML to JSX

JSX must be valid JavaScript, so pasting raw HTML into a React file throws errors before the app renders — an unrecognized class attribute or an unclosed <img> tag stops the build. Converting first removes that friction when lifting a marketing page from a CMS into a React app, reusing a third-party HTML email or widget, or pasting an SVG icon that React refuses until its attributes are camelCased.

The converter is a faithful syntax translator, not a code generator — it will not invent state, props, or business logic, and complex markup still deserves a quick review. But it removes nearly all of the mechanical, error-prone work of making HTML React-ready. Paste your markup above to see the JSX update as you type.