QR Code Generator
Generate custom QR codes for URLs, plain text, WiFi credentials and contact cards. Scan QR codes from your camera or an image file. Saves your QR history locally.
Generate QR codes instantly for URLs, text, WiFi credentials, email addresses, and contact cards with SolveBar's QR Code Generator. Customize colors, download as PNG, and scan existing QR codes — all in your browser with no watermarks.
QR code types and when to use each
URL QR codes link directly to websites. WiFi QR codes let guests connect to your network by scanning instead of typing a password. vCard QR codes encode contact information. Plain text QR codes display a message when scanned.
Best practices for printing QR codes
Minimum recommended size for reliable scanning is 2cm × 2cm. Maintain a quiet zone (white space border) of at least 4 module widths around the code. High contrast between dark modules and light background is essential. Test scan your QR code before mass printing.
QR code error correction levels
Level L (7%): smallest code. Level M (15%): default for most uses. Level Q (25%): good for uneven surfaces. Level H (30%): for codes that may be partially covered. Higher correction = more data but larger code.
Frequently Asked Questions
Is there a limit to how much data I can encode?
QR codes can hold up to 4,296 alphanumeric characters. More data means a denser, harder-to-scan code. Keep URLs short for best results.
Can I change the colors of my QR code?
Yes. Use the color customization options to change foreground and background colors. Ensure sufficient contrast for reliable scanning.
Do QR codes expire?
Static QR codes (like the ones this tool generates) never expire. Dynamic QR codes through redirect services may expire if the service closes.