QR Code Generator
Free online tool to create customizable QR codes for URLs, contacts, text, WiFi, and more—download in PNG, SVG, or PDF instantly.
QR Code Generator
Generate QR codes instantly with customizable options
Our QR code generator is a free utility to produce scannable matrix barcodes encoding various data types like URLs, vCards, or WiFi details, with options for size, colors, and error correction. Suited for businesses, events, and personal use, it generates high-quality codes client-side—ensuring fast, private creation without limits or downloads.
Common Use Cases for QR Codes
- ✓Marketing Materials
Embed QR codes in flyers, posters, or ads to drive traffic to websites or promotions.
- ✓Contact Sharing
Generate vCard QR codes for business cards or email signatures to simplify networking.
- ✓Event Management
Create QR codes for tickets, registrations, or check-ins to streamline attendee experiences.
- ✓WiFi and Payments
Share network credentials or payment details via QR for quick, secure access.
- ✓Product Packaging
Add QR codes to labels for product info, instructions, or warranty links.
- ✓Educational Resources
Link QR codes in handouts or slides to interactive content, videos, or quizzes.
Why Choose Our Generator?
Multiple Data Types
Supports URLs, plain text, vCards, emails, phone numbers, WiFi configs, and SMS
Customization Options
Adjust size (up to 1000px), colors (foreground/background), error correction levels
Real-Time Preview
Instant visual updates as you edit data or styles; test scan compatibility
Download Formats
Export in PNG (high-res), SVG (scalable), or PDF (print-ready) without watermarks
No Limits or Sign-Up
Unlimited generations; client-side processing for speed and privacy
Mobile Scanner Test
Built-in simulation; works seamlessly on desktops and devices
How to Use the QR Code Generator
- Enter Data: Input URL (e.g., "https://stilest.com"), text, or select type (vCard, WiFi)
- Customize: Set size (200-1000px), colors, and error level (L/M/Q/H)
- Preview Code: View the generated QR with scan test simulation
- Validate: Ensure readability; adjust if needed for contrast or density
- Download: Export as PNG/SVG/PDF for web, print, or sharing
Understanding QR Code Generation
QR codes use Reed-Solomon error correction to encode data in black/white modules; generation involves string-to-binary conversion, masking for scanability, and layout in versions (21x21 to 177x177 modules). Libraries like qrcode.js handle encoding, with customization via canvas for colors.
Example: URL "https://example.com" → Encoded matrix; high error correction adds redundancy for damage tolerance.
- Data Encoding: UTF-8 for text/URLs; vCard for contacts with fields like name/email
- Customization: Foreground/background RGB; quiet zone (white border) for scanners
- Error Levels: L(7%), M(15%), Q(25%), H(30%)—higher for printed or complex codes
Uses qrcode.toCanvas() or toDataURL() for output; SVG via XML paths.
Advanced Features & Capabilities
Dynamic QR Types
Auto-format for geo-locations, events (with dates), or payments (Bitcoin/UPIs).
Logo Embedding
Optional center logo insertion with error correction to maintain scannability.
Batch Creation
Generate multiple from CSV inputs for campaigns or inventories.
Frequently Asked Questions
What types of data can I encode in a QR code?
You can encode URLs, text, contact information (vCard), email addresses, phone numbers, WiFi credentials, SMS messages, and more in your QR codes.
Is this tool free to use?
Yes! Our QR Code Generator is completely free to use with no limitations. You can generate as many QR codes as you need.
What formats can I download my QR code in?
You can download your QR codes in PNG, SVG, and PDF formats, making them suitable for both digital and print use.
Does it support color customization?
Yes, choose custom foreground and background colors while ensuring scan reliability with contrast checks.
What is error correction?
Error correction allows QR codes to be readable even if partially damaged; options range from low (7%) to high (30%).
Can I generate QR codes for WiFi?
Absolutely; input SSID and password to create a one-tap network join code.
Privacy & Best Practices Considerations
This QR generator ensures secure, versatile barcode creation:
- Local Processing: Data encoded in-browser—no servers or logs for sensitive info
- Scan Tips: Use high contrast; test with multiple apps; avoid reflective prints
- Best Practices: Add quiet zones; use H-level for outdoor codes
Integration & Code Examples
Implement QR code generation in JavaScript using libraries like qrcode for apps:
JavaScript Example (with qrcode library):
// Install: npm install qrcode
import QRCode from 'qrcode';
// Function to generate QR
async function generateQR(data, options = {}) {
try {
const qr = await QRCode.toDataURL(data, {
width: 256,
color: {
dark: '#000000', // Foreground
light: '#FFFFFF' // Background
},
errorCorrectionLevel: 'H',
...options
});
return qr; // base64 image
} catch (err) {
console.error('QR generation failed:', err);
}
}
// Example usage
generateQR('https://stilest.com').then(qr => {
// Use qr as img src
document.getElementById('qr').src = qr;
});