Free QR Code Generator
Create custom QR codes for URLs, text, and WiFi. Customize colors and download.
Need Advanced Features?
Visit Karuvigal.com for power user features
- WiFi QR codes - instant network sharing
- Email, SMS, and phone number QR codes
- vCard (business card) QR codes
- Logo embedding in center of QR code
- Custom shapes and patterns
- Batch generation from spreadsheet
Opens in new tab • Completely free • No sign-up required
About QR Code Generator
QR codes have become an essential bridge between physical and digital worlds. Originally developed in 1994 for automotive manufacturing, QR codes now power everything from contactless payments to restaurant menus. Our free QR code generator empowers you to create unlimited, customizable QR codes that never expire - perfect for marketing campaigns, business operations, or personal projects.
What makes our generator special is its focus on privacy and customization. Generate QR codes entirely in your browser without sending any data to external servers. Customize colors to match your brand identity while maintaining optimal scanning reliability. Download in high-resolution PNG for immediate use or scalable SVG for professional printing and large-format applications.
Whether you're a marketer creating campaign materials, a business owner modernizing customer experiences, or a developer building applications, our QR code generator provides professional-grade output with zero cost and complete data privacy. No registration, no limits, no compromises.
Common Use Cases
Digital Marketing
Create QR codes for posters, flyers, and advertisements to drive traffic to landing pages, social media, or promotional content.
Contactless Payments
Generate payment QR codes for UPI, PayPal, or cryptocurrency wallets for seamless digital transactions.
WiFi Sharing
Share WiFi credentials instantly by encoding network name and password in a QR code for guests to scan and connect.
Business Cards
Add vCard QR codes to business cards for instant contact information sharing and professional networking.
Product Packaging
Place QR codes on products to provide authenticity verification, user manuals, or warranty registration.
Event Management
Use QR codes for event tickets, check-ins, and access control at conferences, concerts, and gatherings.
QR Code Best Practices
Color Contrast Matters
Always maintain high contrast between foreground and background colors. Dark-on-light combinations (like black on white) offer the best scanning reliability. While you can customize colors to match your brand, test scanning under various lighting conditions before finalizing your design.
Size and Placement
QR codes should be large enough to scan from your target distance. For business cards, 2.5x2.5 cm minimum. For posters visible from 1 meter, at least 10x10 cm. Always leave adequate white space (quiet zone) around the code - at least 4 modules wide on all sides.
Error Correction Levels
QR codes include built-in error correction that allows them to remain scannable even if partially damaged or obscured. Our generator uses medium error correction (15% recovery), balancing reliability with QR code size. This works well for most applications including print and digital use.
Keep URLs Short
While QR codes can store large amounts of data, shorter URLs create simpler, more scannable codes. Consider using URL shorteners for long links. Simpler QR codes scan faster and work better at smaller sizes or from greater distances.
Frequently Asked Questions
Technical Specifications
📱 Scanning Requirements
- Camera resolution: 5MP or higher recommended
- Lighting: Adequate ambient light, avoid harsh shadows
- Distance: 10-30 cm from camera for standard QR codes
- Angle: Face camera directly, avoid extreme angles
🎨 Design Guidelines
- Minimum size: 2x2 cm for close-range scanning
- Contrast ratio: At least 60% difference between colors
- Quiet zone: Minimum 4 modules white space on all sides
- Format: PNG for web/digital, SVG for print/large format
💾 Data Capacity
- Numeric only: Up to 7,089 characters
- Alphanumeric: Up to 4,296 characters
- Binary/Byte: Up to 2,953 bytes
- Recommended: Keep URLs under 100 characters for optimal scanning