QR Code Generator
Create QR codes from text or URLs instantly. Customize size and error correction level.
Instant Generation
Generate QR codes in real-time as you type. No waiting required.
Customizable
Choose from multiple sizes and error correction levels.
Download as PNG
Save your QR code as high-quality PNG image.
What is a QR Code?
QR (Quick Response) codes are two-dimensional barcodes that can store various types of information including URLs, text, contact details, and more. They were invented in 1994 by Denso Wave, a Japanese automotive company, and have become ubiquitous in modern digital marketing and contactless transactions.
Error Correction Levels
- Level L (Low): 7% of codewords can be restored. Best for clean environments.
- Level M (Medium): 15% recovery capacity. Good balance for most uses.
- Level Q (Quartile): 25% recovery. Better durability for industrial use.
- Level H (High): 30% recovery. Maximum durability, ideal for damaged surfaces.
Common Use Cases
QR codes are widely used for website links, digital payments, product tracking, event ticketing, WiFi network sharing, business cards, restaurant menus, marketing campaigns, and contactless check-ins. Their versatility makes them essential for modern digital interactions.
Best Practices
- Use higher error correction for codes that may get damaged or printed on uneven surfaces
- Test your QR codes before mass distribution to ensure they scan correctly
- Larger sizes are better for scanning from a distance
- Ensure good contrast between the QR code and background
- Keep the encoded data concise for better scanning reliability
FAQ
QR codes can store URLs, plain text, phone numbers, email addresses, SMS messages, WiFi credentials, contact information (vCard), and more. The maximum capacity depends on the data type and error correction level.
256px is good for digital displays and websites. 512px works well for posters and print materials. 1024px is ideal for large banners or when high quality is needed. Smaller sizes (128px) work for small labels or icons.
Use M (Medium) for most cases. Choose H (High) if the QR code will be printed on rough surfaces or may get partially damaged. L (Low) works for clean digital environments where space is limited.
This tool generates standard black and white QR codes. After downloading, you can edit the PNG in image editing software, but ensure sufficient contrast between foreground and background for reliable scanning.
QR codes themselves never expire. They're just encoded data. However, if your QR code points to a URL, that webpage must remain active. If the website goes down, the QR code won't work anymore.
Yes, completely safe. All QR code generation happens locally in your browser. No data is sent to any server. Your information stays private on your device.