Do Generator

QR Code Generator

Create high-quality QR codes for URLs, WiFi, vCard, SMS, email, and phone numbers. Customize colors, size, and error correction, then download PNG or PDF directly in your browser.

High Resolution
Instant Download
Fully Customizable
0
Generated Today
∞
Free Usage
100%
Client-Side
24/7
Online Service

Generator Settings

Live Preview

Enter content to see QR code preview

Real-time Preview
Instantly generate QR codes as you type with live preview functionality
Multiple Formats
Download in PNG and PDF formats to meet different usage requirements
Full Customization
Easily change colors, size, and error correction levels to match your needs.
Mobile Optimised
Perfect compatibility with mobile devices for QR code generation anywhere

What Is a QR Code Generator?

Use this QR code generator to turn links, WiFi details, contact cards, messages, and other short data into scannable codes. You can preview changes instantly, adjust colors and size, and export files for print or digital sharing.

Supports 7 common QR code types

Supported QR Code Types

Text QR Codes

Plain text content up to 4,296 characters

URL/Link QR Codes

Website links with automatic HTTPS detection

WiFi QR Codes

Complete network credentials (WPA/WPA2/WEP/Open)

vCard Contact QR Codes

Full contact information following vCard 3.0 standard

SMS QR Codes

Pre-filled text messages with phone numbers

Email QR Codes

Email addresses with subject and body content

Professional Features

High Resolution

Up to 1000x1000 pixels for print quality

Error Correction

L(7%), M(15%), Q(25%), H(30%) levels

Custom Styling

Brand colors and personalization

Multiple Formats

PNG for web, PDF for print

Real-time Preview

Instant visual feedback

Mobile Optimised

Perfect for smartphone scanning

Industry Standards

ISO/IEC 18004:2015

Full compliance with international standards

Optimal Data Encoding

Automatic mode selection for minimal size

Reed-Solomon Error Correction

Industry-standard error recovery

Universal Compatibility

Works with all QR code scanners

Security Best Practices

No data storage, client-side processing

Accessibility Standards

WCAG 2.1 compliant interface

Expert Tips for Maximum Scan Success

📱 Mobile Optimization

Use minimum 2cm (0.8 inch) size for print materials. Higher error correction (Q or H level) improves scanning reliability on damaged or low-quality prints.

🎨 Design Guidelines

Maintain sufficient contrast between foreground and background colors. Dark-on-light works best. Avoid gradients or patterns that may interfere with scanning.

🔒 Security Considerations

Always verify QR code destinations before sharing publicly. Use dynamic QR codes for links you may need to update. Consider URL shorteners for analytics.

📊 Performance Metrics

Track scan rates and user engagement. QR codes with clear call-to-actions receive 80% more scans than generic codes. Test readability across different devices.

Technical Specifications

Data Capacity

  • • Numeric: 7,089 characters max
  • • Alphanumeric: 4,296 characters max
  • • Binary: 2,953 bytes max
  • • Kanji: 1,817 characters max

Version Support

  • • Version 1-40 auto-selection
  • • 21x21 to 177x177 modules
  • • Optimal version for content
  • • Minimal data overhead

Error Correction

  • • Level L: ~7% error recovery
  • • Level M: ~15% error recovery
  • • Level Q: ~25% error recovery
  • • Level H: ~30% error recovery

This QR code generator implements the complete ISO/IEC 18004:2015 standard with Reed-Solomon error correction, automatic data optimization, and mask pattern selection for maximum compatibility and reliability. All codes are generated client-side for privacy and security.

Why Choose Our QR Code Generator?

🏆 Professional Grade Quality

  • ✓ Suitable for business, education, and personal use
  • ✓ ISO/IEC 18004:2015 certified implementation
  • ✓ Designed for reliable scanning across common devices
  • ✓ Professional print quality up to 300 DPI
  • ✓ Enterprise-grade batch processing
  • ✓ No registration required, completely free

🔒 Privacy and Security

  • ✓ 100% client-side processing - no data stored
  • ✓ No tracking, no analytics, no user profiling
  • ✓ GDPR and CCPA compliant by design
  • ✓ Open source libraries, transparent operation
  • ✓ SSL encrypted connection
  • ✓ No ads, no watermarks, no limitations

ISO-standard QR code generation • Client-side processing • PNG and PDF export

QR Code Generator FAQ

What can I put in a QR code?

This tool supports plain text, URLs, WiFi credentials, vCard contacts, SMS, email, and phone numbers.

What size should I use for a printed QR code?

For printed materials, test the final design at the intended size and keep clear space around the code. Larger sizes and higher contrast usually scan more reliably.

Which error correction level should I choose?

Level M works well for most everyday use. Choose Q or H when the code may be printed small, exposed to wear, or partially covered.

Do QR codes created here expire?

The generated code itself does not expire. It will keep working as long as the encoded destination or content remains valid.

References & Resources

References & Resources