JavaScript QR Code Generator

Instantly generate QR codes online and get ready-to-use JavaScript code snippets for your projects. This free QR Code Maker supports custom colors, WiFi QR codes, and instant download as PNG. Whether you need a JavaScript QR Code for your website or want to generate QR code in JavaScript for React or Node.js, our QR Code Generator is the perfect tool.

How to UseView Code Examples

How to Use

  1. Enter the text, URL, WiFi credentials, or data you want to encode into a QR code using this free JavaScript QR Code Generator.
  2. Customize the size, color, and error correction level as needed. You can easily custom QR code color and preview in real time.
  3. Click "Generate" to instantly create your QR code. The tool supports generate QR code with JavaScript in both React.js and Node.js environments.
  4. Copy the ready-to-use JavaScript code snippet or download QR code as PNG for your project.

No registration or installation required. All processing is done in your browser for maximum privacy. Try our js qr code generator for fast and secure results.

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💡 Tip: Some QR code scanners may not display complex content. Use iOS Camera, Google Lens, or international scanners for best compatibility.

JavaScript Code Example

// Generate a QR code using qrcode-generator library
import QRCode from 'qrcode-generator';

const typeNumber = 0; // 0 = automatic
const errorCorrectionLevel = 'M'; // L, M, Q, H
const qr = QRCode(typeNumber, errorCorrectionLevel);
qr.addData('https://jsgenerator.com');
qr.make();
const svgTag = qr.createSvgTag();
document.getElementById('qrcode').innerHTML = svgTag;
// You can also use this approach to generate QR code in React JS or Node.js

You can also use our online tool above to generate QR code JavaScript and get instant code snippets for React/Node.js. This qrcode-generator js approach is simple and effective for any web project.

How JavaScript QR Code Generation Works

This tool uses the qrcode-generator library, which implements the ISO/IEC 18004 standard. The error correction level (L/M/Q/H) determines how much damage the code can sustain while remaining scannable. You can generate QR code in JavaScript for various use cases, including pure js wifi qr code generator scenarios. The same core logic powers js generate qrcode and qr code generator js solutions for both frontend and backend.

Use Cases

  • Share website links, contact info, or WiFi credentials via QR code. Easily generate QR code in JavaScript for WiFi sharing.
  • Embed QR codes in business cards, flyers, or product packaging using this free QR code maker.
  • Integrate qr code generator javascript into web apps, admin dashboards, or event tickets.
  • Automate QR code creation for marketing campaigns or inventory management with js generate qr code scripts.

Want to explore more free javascript generator tools? Visit our homepage for more tools and code examples, including generate qr code node js and generate qr code in react js solutions.

Frequently Asked Questions

What data can I encode in a QR code?
You can encode text, URLs, email addresses, phone numbers, WiFi credentials, and more. This QR Code Generator supports all standard formats and is a great choice for anyone looking to generate QR code JavaScript.
How does this QR code generator work?
It uses the open-source qrcode-generator library in JavaScript, following the ISO/IEC 18004 standard. You can customize error correction, size, and colors, and even generate QR code for WiFi or download QR code as PNG.
Is this QR code generator free to use?
Yes, all features are 100% free with no login required. You can use this free QR code maker to generate QR code in JavaScript, React, or Node.js.
Is my data processed securely?
All QR code generation is done in your browser. No data is sent to any server, ensuring maximum privacy. This is a pure JS QR code generator for maximum security.

Features & Benefits

Real-time Preview

See your QR code update instantly as you type or change settings.

Customizable Design

Choose colors, size, and error correction level to match your needs.

Unicode Support

Supports text, symbols, and emojis through UTF-8 Unicode encoding.

Developer Friendly

Ready-to-use code examples for React, Node.js, and vanilla JavaScript.

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