HTML to JSX Converter

Quick Start Guide

1. Paste HTML: Copy your HTML code into the input area
2. Convert: Click "Convert to JSX" to transform to React JSX format
3. Review Output: Check the converted JSX code
4. Copy or Download: Use buttons to save the JSX output
5. Use in React: Paste into your React component
6. Try Examples: Click example buttons to see different conversions

What is HTML to JSX Conversion?

HTML to JSX conversion transforms standard HTML markup into React JSX format by applying React-specific syntax rules. JSX (JavaScript XML) is a syntax extension for JavaScript used by React that looks similar to HTML but has important differences required for React components.

Purpose: Convert HTML to React-compatible JSX Input: Standard HTML markup Output: React JSX code Usage: React development, component creation, migrating HTML to React

Why Convert HTML to JSX?

Development Benefits:

• Faster React Development: Quickly convert existing HTML to React components
• Learn React: Understand differences between HTML and JSX
• Migrate Projects: Convert static HTML sites to React apps
• Save Time: Avoid manual attribute renaming
• Reduce Errors: Automatic conversion prevents common JSX mistakes
• Component Creation: Start with HTML mockup, convert to JSX

Common Scenarios:

• Converting designer HTML mockups to React components
• Migrating static websites to React
• Learning React JSX syntax
• Creating components from HTML snippets
• Converting third-party HTML (with caution)
• Building React UI from HTML templates

Key HTML to JSX Transformations

1. class → className

HTML:

<div class="container">
  <h1 class="title">Hello</h1>
</div>

JSX:

<div className="container">
  <h1 className="title">Hello</h1>
</div>

Why: class is a reserved keyword in JavaScript. React uses className instead.

2. for → htmlFor

HTML:

<label for="email">Email:</label>
<input id="email" type="email">

JSX:

<label htmlFor="email">Email:</label>
<input id="email" type="email" />

Why: for is a reserved keyword in JavaScript. React uses htmlFor instead.

3. Inline Styles to Objects

HTML:

<div style="background-color: #f0f0f0; padding: 20px; font-size: 16px;">
  Content
</div>

JSX:

<div style={{backgroundColor: '#f0f0f0', padding: '20px', fontSize: '16px'}}>
  Content
</div>

Why: React expects style as a JavaScript object with camelCase properties.

4. Self-Closing Tags

HTML:

<img src="photo.jpg" alt="Photo">
<input type="text">
<br>

JSX:

<img src="photo.jpg" alt="Photo" />
<input type="text" />
<br />

Why: JSX requires all tags to be properly closed, including void elements.

5. Event Handlers to camelCase

HTML:

<button onclick="handleClick()">Click Me</button>
<input onchange="handleChange()">

JSX:

<button onClick={handleClick}>Click Me</button>
<input onChange={handleChange} />

Why: React uses camelCase for event handlers and expects function references, not strings.

6. SVG Attributes

HTML:

<svg stroke-width="2" stroke-linecap="round">
  <path fill-rule="evenodd" />
</svg>

JSX:

<svg strokeWidth="2" strokeLinecap="round">
  <path fillRule="evenodd" />
</svg>

Why: SVG attributes in JSX follow camelCase convention.

7. Boolean Attributes

HTML:

<input type="checkbox" checked>
<input type="text" disabled>

JSX:

<input type="checkbox" checked={true} />
<input type="text" disabled={true} />

Why: JSX makes boolean attributes explicit.

Common Use Cases

1. Converting Designer Mockups

Purpose: Transform HTML mockups from designers into React components

Scenario: Designer provides HTML/CSS mockup, you need to convert to React.

Workflow:

1. Copy HTML from mockup
2. Convert to JSX using this tool
3. Create React component
4. Add state and logic
5. Test component

Before (HTML mockup):

<div class="card">
  <img src="product.jpg" alt="Product">
  <h3>Product Name</h3>
  <button onclick="addToCart()">Add to Cart</button>
</div>

After (React component):

function ProductCard() {
  const handleAddToCart = () => {
    // Add logic
  }

  return (
    <div className="card">
      <img src="product.jpg" alt="Product" />
      <h3>Product Name</h3>
      <button onClick={handleAddToCart}>Add to Cart</button>
    </div>
  )
}

2. Migrating Static Sites to React

Purpose: Convert existing HTML website to React app

Process:

1. Extract HTML sections
2. Convert each section to JSX
3. Create components
4. Add React Router
5. Implement state management

Benefits: Faster migration, fewer conversion errors

3. Learning React JSX

Purpose: Understand HTML vs JSX differences

Learning approach:

1. Write simple HTML
2. Convert to JSX
3. See transformations
4. Understand React requirements
5. Build muscle memory

Example learning exercise: Convert a form, see all transformations

4. Code Snippet Conversion

Purpose: Quickly convert HTML snippets from documentation or tutorials

Scenario: Found HTML example online, need to use in React project

Steps:

1. Copy HTML snippet
2. Convert to JSX
3. Paste into React component
4. Adjust as needed

5. Component Library Migration

Purpose: Convert HTML component library to React

Example: Bootstrap HTML → React Bootstrap components

Workflow:

1. Convert HTML structure
2. Add React props
3. Implement component logic
4. Create component library

6. Email Template to React

Purpose: Convert HTML email templates to React for dynamic emails

Benefits:

• Reusable components
• Dynamic content
• Easier maintenance

Features

Core Conversions

• class → className: All class attributes
• for → htmlFor: Label for attributes
• Inline Styles: Convert to React style objects
• Self-Closing Tags: Add /> to void elements
• Event Handlers: onclick → onClick, etc.
• SVG Attributes: stroke-width → strokeWidth, etc.
• Table Attributes: colspan → colSpan, rowspan → rowSpan
• Boolean Attributes: Make explicit (checked={true})

Supported HTML

• Basic Elements: div, span, p, h1-h6, etc.
• Forms: input, textarea, select, label, button
• Tables: table, tr, td, th, thead, tbody
• SVG: Full SVG element support
• Semantic HTML: article, section, nav, header, footer
• Media: img, video, audio
• Lists: ul, ol, li

Output Features

• Real-time Conversion: Instant JSX output
• Stats Display: Lines, characters, file size
• Copy to Clipboard: One-click copying
• Download: Save as .jsx file
• Examples: Pre-built conversion examples

Best Practices

1. Always Review Output

Important: Automated conversion isn't perfect

Manual review checklist:

• Event handlers have correct function references
• Style object values are properly quoted
• Boolean attributes are correct
• Component makes sense in React context
• No HTML comments in JSX (use {/* */})

2. Handle Event Handlers Carefully

Conversion limitation: Tool converts attribute names, but you must provide functions

HTML:

<button onclick="alert('Hi')">Click</button>

Tool output:

<button onClick="alert('Hi')">Click</button>

What you need:

<button onClick={() => alert('Hi')}>Click</button>

3. Wrap in Component Function

Converted JSX needs component wrapper:

export default function MyComponent() {
  return (
    <div className="container">
      {/* Converted JSX here */}
    </div>
  )
}

4. Add React Imports

Don't forget imports:

import React from 'react' // If needed for older React
import { useState } from 'react' // For hooks

5. Convert String Event Handlers

Tool converts attribute names, you convert handlers:

Tool output:

<button onClick="handleClick()">Click</button>

Fix to:

<button onClick={handleClick}>Click</button>

6. Test in React App

Always test converted components:

1. Create React component
2. Import and use
3. Check for errors
4. Test functionality
5. Verify styling

Technical Details

Conversion Algorithm

1. Convert class attributes to className
2. Convert for attributes to htmlFor
3. Parse and convert inline styles to objects
4. Add self-closing syntax to void elements
5. Convert event handler attributes to camelCase
6. Convert SVG attributes to camelCase
7. Convert table attributes (colspan, rowspan)
8. Make boolean attributes explicit
9. Output formatted JSX

What Gets Converted

Attribute conversions:

• class → className
• for → htmlFor
• onclick → onClick
• onchange → onChange
• stroke-width → strokeWidth
• colspan → colSpan
• And many more...

Structure conversions:

• <img> → <img />
• <input> → <input />
• <br> → <br />
• style="..." → style={{...}}

Limitations

This is a basic converter:

• Doesn't parse complex JavaScript in attributes
• Doesn't handle template literals
• May not catch all edge cases
• Requires manual review
• Event handlers need manual function conversion

For production:

• Always review output
• Test thoroughly
• Use TypeScript for type safety
• Consider component structure
• Add proper error handling

Common Conversions

Form Conversion

HTML:

<form action="/submit" method="POST">
  <label for="username">Username:</label>
  <input type="text" id="username" name="username" required>
  <button type="submit">Submit</button>
</form>

JSX:

<form action="/submit" method="POST">
  <label htmlFor="username">Username:</label>
  <input type="text" id="username" name="username" required={true} />
  <button type="submit">Submit</button>
</form>

Style Conversion

HTML:

<div style="display: flex; justify-content: center; align-items: center; height: 100vh;">
  <p style="color: red; font-size: 20px;">Centered Text</p>
</div>

JSX:

<div style={{display: 'flex', justifyContent: 'center', alignItems: 'center', height: '100vh'}}>
  <p style={{color: 'red', fontSize: '20px'}}>Centered Text</p>
</div>

SVG Conversion

HTML:

<svg width="24" height="24" viewBox="0 0 24 24" fill="none">
  <path d="M12 2L2 7L12 12L22 7L12 2Z" stroke="currentColor" stroke-width="2"/>
</svg>

JSX:

<svg width="24" height="24" viewBox="0 0 24 24" fill="none">
  <path d="M12 2L2 7L12 12L22 7L12 2Z" stroke="currentColor" strokeWidth="2"/>
</svg>

Troubleshooting

Issue: Event handlers don't work

Cause: String values instead of function references

Solution: Convert string handlers to functions

Wrong:

<button onClick="handleClick()">Click</button>

Correct:

<button onClick={handleClick}>Click</button>

Issue: Styles not applied

Cause: Invalid style object syntax

Solution: Check style object format

Wrong:

<div style="color: red">Text</div>

Correct:

<div style={{color: 'red'}}>Text</div>

Issue: Component won't render

Possible causes:

1. Missing component wrapper
2. Unclosed tags
3. Invalid JSX syntax

Solution: Wrap in component, check syntax

Issue: Console warnings in React

Common warnings:

• "Unknown prop class" → Use className
• "Unknown prop for" → Use htmlFor
• Invalid style property

Solution: Review conversion, fix attributes

React Integration

Using Converted JSX

Step 1: Create component file

// src/components/MyComponent.jsx
export default function MyComponent() {
  return (
    // Paste converted JSX here
    <div className="container">
      <h1>Hello World</h1>
    </div>
  )
}

Step 2: Import and use

import MyComponent from './components/MyComponent'

function App() {
  return <MyComponent />
}

Adding State and Logic

import { useState } from 'react'

export default function MyComponent() {
  const [count, setCount] = useState(0)

  const handleClick = () => {
    setCount(count + 1)
  }

  return (
    <div className="container">
      <button onClick={handleClick}>Clicks: {count}</button>
    </div>
  )
}

Browser Compatibility

Supported browsers:

• ✅ Chrome 90+ (recommended)
• ✅ Firefox 88+
• ✅ Safari 14+
• ✅ Edge 90+
• ✅ Opera 76+

Works on:

• Desktop: Windows, macOS, Linux
• Mobile: iOS Safari, Chrome Android
• Tablets: iPad, Android tablets

Privacy & Security

Client-Side Processing

• 100% Local: All conversion in browser
• No Uploads: Code never sent to servers
• No Storage: Nothing saved or cached
• No Tracking: No analytics on your code
• No Accounts: No login required

Safe for All Code

• ✅ Commercial projects
• ✅ Client work
• ✅ Proprietary code
• ✅ Personal projects

Quick Reference

Common Conversions

HTML	JSX
class="..."	className="..."
for="..."	htmlFor="..."
onclick="..."	onClick={...}
style="..."	style={{...}}
<img>	<img />
<input>	<input />
stroke-width	strokeWidth
colspan	colSpan

Next Steps After Conversion

1. ✅ Review converted JSX
2. ✅ Wrap in component function
3. ✅ Add React imports
4. ✅ Convert event handlers to functions
5. ✅ Test in React app
6. ✅ Add state/props as needed

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Note: This tool provides basic HTML to JSX conversion. Always review and test the output in your React application. For complex conversions or production code, consider manual review and testing.