QR Code Generator
Create high-quality QR codes for URLs, WiFi, vCard, SMS, email, and phone numbers. Customise colours, size, and error correction, then download PNG or PDF directly in your browser.
Generator Settings
Live Preview
Enter content to see QR code preview
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 colours and size, and export files for print or digital sharing.
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 colours 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 Optimisation
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 colours. 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
Test your QR code on more than one screen size and camera before publishing. If you plan to print it, verify readability at the final size and leave enough quiet space around the code.
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 optimisation, and mask pattern selection for maximum compatibility and reliability. All codes are generated client-side for privacy and security.
Error correction reference
QR codes rebuild damaged data from redundant modules — pick the level that matches where your code will live
| Level | Recovers | Numeric capacity (v3) | Typical use |
|---|---|---|---|
| L | 7% | 127 | Clean environments, maximal data density |
| M | 15% | 77 | General default — posters, flyers, screens |
| Q | 25% | 48 | Packaging and printed codes, some wear expected |
| H | 30% | 35 | Industrial tags, logos embedded in the code |
Higher correction means more redundant modules — a denser pattern that holds less data at the same version. Numeric capacity shown for version 3 (29×29 modules): L 127, M 77, Q 48, H 35 digits.
Why Choose Our QR Code Generator?
🏆 Professional Grade Quality
- ✓ Suitable for business, education, and personal use
- ✓ Built around ISO/IEC 18004:2015 QR code guidance
- ✓ Designed for reliable scanning across common devices
- ✓ Professional print quality up to 300 DPI
- ✓ Supports everyday sharing, print, and signage workflows
- ✓ No registration required, completely free
🔒 Privacy and Security
- ✓ 100% client-side processing - no data stored
- ✓ Preview content and export files directly in the browser
- ✓ Designed to keep QR content under your control during generation
- ✓ Open source libraries, transparent operation
- ✓ SSL encrypted connection
- ✓ Straightforward PNG and PDF export without extra setup
QR code workflows for web and print • Browser-based generation • 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.
How do I create a QR code?
Enter your text, URL, or data in the input field above. Our QR code generator creates a scannable QR code instantly. You can customise colours, size, and download as PNG or SVG.
What is the difference between a QR code and a barcode?
A linear barcode such as UPC or Code 128 stores data in one dimension — usually a short product code scanned at the billing counter. A QR code stores data in two dimensions and holds up to 4,296 alphanumeric characters: URLs, WiFi credentials, UPI payment details, contact cards, and more. QR codes also include error correction, so they remain scannable even when partially damaged.
Can I create a QR code without signing up?
Yes — no account, email, or payment is required. Open the tool, choose a type such as text, URL, WiFi, or vCard, style it if you like, and download the PNG or PDF instantly. Generation happens entirely in your browser, so nothing is stored on a server.
Can I download my QR code as a PNG or PDF?
Yes. After customising your QR code, download it as a PNG for websites, social media, and presentations, or as a PDF for printed flyers and business cards. Both formats generate instantly in your browser with no signup, watermark, or download limit.
References & Resources
-
QR Code - Wikipedia
Complete overview of QR code technology, history, and technical specifications.
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QRCode.com - Denso Wave (QR Code Inventor)
The official QR Code website by Denso Wave, the inventor of the QR code.