QR Code Generator
? Frequently Asked Questions
What data can QR codes contain?
QR codes can store URLs, plain text, phone numbers, email addresses, SMS messages, WiFi credentials, vCard contact info, and more. Standard QR codes hold up to 4,296 alphanumeric characters.
What size should I make my QR code?
Minimum 2×2 cm (0.8×0.8 inches) for close scanning, 10×10 cm for moderate distance (1-2 meters). Larger QR codes scan from farther away. For print, use at least 300 DPI resolution.
Can I customize QR code colors and add logos?
Yes! You can change colors (ensure sufficient contrast), add logos in the center (up to 30% of code area), and adjust error correction. Higher error correction allows more customization without scan failure.
What's error correction level?
Error correction (L, M, Q, H) determines how much damage the code can sustain while remaining scannable. Low (7% recovery), Medium (15%), Quartile (25%), High (30%). Higher levels create larger, more complex codes.
What format should I download QR codes as?
Use PNG for digital displays (transparent backgrounds, lossless). Use SVG for print (infinite scalability, no pixelation). Use JPG only if size is critical and backgrounds are fine.
Is my data safe and secure?
Yes, absolutely! This tool runs entirely in your browser. All data processing happens locally on your device - nothing is uploaded to our servers. Your files and data never leave your computer, ensuring complete privacy and security.