📱 QR Code Generator - Free QR Code Maker
Free QR Code Generator converts URLs, text, and links into QR codes instantly!
📱 What is a QR Code?
A QR Code (Quick Response Code) is a two-dimensional barcode that can be scanned with a smartphone camera to quickly access information.
Key Features:
- Quick Access: Instantly access information by scanning with a camera
- Large Capacity: Store up to 7,089 numeric characters or 4,296 alphanumeric characters
- Error Correction: Can be restored even if damaged up to 30%
- Versatile Use: URLs, text, contact information, WiFi settings, and more
🎯 Main Features
1. 📝 Text and URL Input
- Support for URLs, text, emails, phone numbers, and more
- Real-time QR code preview
- Input validation
2. 📏 Size Selection
Choose from various sizes suitable for your purpose:
- 128px: Small icons, business cards
- 256px: Standard documents, flyers
- 512px: Posters, banners
- 1024px: Large-format printing, outdoor signage
3. 💪 Error Correction Levels
Select the appropriate level based on your usage environment:
- L (Low - 7%): Clean environments, digital displays
- M (Medium - 15%): General purposes, printed materials (default)
- Q (Quartile - 25%): Outdoor use, stickers, labels
- H (High - 30%): Industrial environments, logo insertion
4. 🎨 Color Customization
- Foreground Color: QR code pattern color
- Background Color: Background color
- Custom color combinations
- Real-time preview
5. 💾 Download Feature
- PNG format download
- High-resolution output
- Timestamp-based automatic naming
6. 📜 Generation History
- Save last 10 generated codes
- One-click reload
- Date and time recording
📖 How to Use
Basic Usage
- Enter text or URL in the input field
- Adjust size and error correction level as needed
- Customize colors (optional)
- Click "Download QR Code" button
Advanced Features
- Color Settings: Adjust foreground/background colors using color pickers
- History Management: Select and reload from previously generated codes
- Size Optimization: Choose appropriate size for your use case
💡 Common Use Cases
🏢 Business
- Business Cards: Share contact information instantly
- Product Packaging: Link to product information and manuals
- Marketing Materials: Connect to landing pages and promotions
- Event Registration: Simplify event check-in processes
👤 Personal
- WiFi Sharing: Share WiFi passwords without typing
- Social Media: Link to profiles and accounts
- Contact Sharing: Share vCards instantly
- Personal Website: Link to portfolios and blogs
🎓 Education
- Learning Materials: Link to online resources and videos
- Attendance: Track student attendance
- Assignment Submission: Provide submission links
- Campus Navigation: Create interactive campus maps
🔧 Technical Specifications
QR Code Standards
- Standard: ISO/IEC 18004:2015
- Versions: 1-40 (automatic optimization)
- Encoding: UTF-8 support
- Format: PNG image
Error Correction Details
| Level | Recovery Rate | Use Case | Data Capacity |
|---|---|---|---|
| L | ~7% | Digital displays | Highest |
| M | ~15% | Standard printing | High |
| Q | ~25% | Outdoor stickers | Medium |
| H | ~30% | Logo insertion | Lowest |
❓ Frequently Asked Questions
Q1. Are generated QR codes permanent?
Yes, QR codes generated on this site are permanent. Once created, they can be used indefinitely as long as the linked content remains accessible.
Q2. Is there a character limit?
Standard QR codes can store up to 4,296 alphanumeric characters. For optimal scanning, we recommend keeping URLs under 300 characters.
Q3. Can I customize colors?
Yes! You can customize both foreground and background colors. However, ensure sufficient contrast for reliable scanning.
Q4. Which error correction level should I choose?
- Choose L for digital displays
- Choose M for general printing (recommended)
- Choose Q for outdoor use or when adding small logos
- Choose H for environments where damage is likely or when adding larger logos
Q5. What file format is supported for download?
QR codes are downloaded as high-resolution PNG files, suitable for both digital and print use.
Q6. Do QR codes work on all devices?
Yes, QR codes can be scanned by any modern smartphone camera (iOS, Android) and dedicated QR code reader apps.
🎨 Design Tips
Color Selection
- High Contrast: Ensure sufficient contrast between foreground and background
- Dark on Light: Traditional black on white provides best scanning reliability
- Test Before Use: Always test your QR code after customization
Size Guidelines
- Business Cards: 256px or larger
- Flyers/Brochures: 512px recommended
- Posters: 1024px for optimal scanning distance
- Digital Use: 256px sufficient for screens
Error Correction Strategy
- Standard Use: Level M (15%) is sufficient for most cases
- Outdoor/Stickers: Use Level Q (25%) for durability
- Logo Insertion: Use Level H (30%) and keep logo size under 20% of code area
🚀 Advanced Tips
- URL Shortening: Use URL shorteners for long links to create simpler QR codes
- Testing: Always test QR codes on multiple devices before mass production
- Quiet Zone: Maintain white space around QR code (minimum 4 modules wide)
- Print Quality: Use vector formats or high DPI for professional printing
- Analytics: Use trackable short URLs to monitor QR code scan statistics
🔒 Privacy and Security
- All QR code generation happens in your browser
- No data is sent to external servers
- Generated QR codes contain only the information you provide
- History is stored only in your browser's local storage
📱 Browser Compatibility
- ✅ Chrome 90+
- ✅ Firefox 88+
- ✅ Safari 14+
- ✅ Edge 90+
- ✅ Mobile browsers (iOS Safari, Chrome Mobile)
Start creating your free QR codes now! 🎉