QR Code Generator
Generate QR codes for various types of data including URLs, WiFi credentials, contact information, and more. Customize colors, size, and error correction levels. Download your QR codes as high-quality PNG images.
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QR code
Frequently Asked Questions
What types of data can I encode in a QR code?
QR codes support text, URLs, WiFi credentials, email addresses (with subject and body), phone numbers, SMS messages with pre-filled text, and geographic coordinates. Each type formats data differently for optimal scanning. For example, WiFi QR codes allow automatic network connection, while email QR codes pre-fill email clients with recipient and subject.
How do I create a WiFi QR code for easy network sharing?
Select "WiFi" type, enter your network name (SSID), password, and encryption type (WPA/WPA2, WEP, or no password). The generated QR code encodes all network credentials. Users can scan it with their smartphone camera to automatically connect to the WiFi network without manually entering passwords. Perfect for guest networks, cafes, and offices.
What is error correction level and which should I choose?
Error correction allows QR codes to be readable even if partially damaged. Low (7%) is smallest but least tolerant. Medium (15%) balances size and durability. Quartile (25%) handles moderate damage. High (30%) works even with significant damage but creates larger codes. For printed materials or outdoor use, choose Quartile or High.
Can I customize QR code colors and appearance?
Yes! Use the settings panel to adjust foreground (dark) and background (light) colors, size, margin, and error correction level. While customization is possible, maintain sufficient contrast between foreground and background colors for reliable scanning. Very light or similar colors may cause scanning failures on some devices.
How large should I make my QR code for printing?
For business cards, use at least 0.8 inches (2cm) square. For posters, 2-4 inches (5-10cm). For billboards or outdoor advertising, much larger (1-2 feet). The general rule: consider scanning distance - codes should be readable from the expected viewing distance. Test print samples at actual size and scan from typical distance to verify readability.
What is the maximum data capacity of a QR code?
QR codes can store up to 4,296 alphanumeric characters or 7,089 numeric digits. However, practical limits are lower - dense QR codes with maximum data are harder to scan. For best results, keep URLs under 100 characters, text under 300 characters. For larger data, use URL shorteners or link to online content rather than embedding everything in the QR code.