zztool What is QR Code?
QR Code (Quick Response Code) is a two-dimensional barcode that can store URLs, text, contact information and more. Simply scan with your phone camera to read the content. Widely used in marketing, payments, authentication and more.
Use Cases
🔗 URL Sharing
Quick website link sharing
📶 WiFi Connect
Scan to connect WiFi
📱 Contact Info
Phone, email one-scan dial
💳 Mobile Payment
Scan to pay conveniently
🎫 Ticket Verification
Event entry, coupons
📦 Product Tracking
Logistics, inventory
FAQ
How much data can QR Code store?
Up to about 3000 characters, but keep it short for better scan success rate.
Do QR Codes expire?
No, QR Code itself is just encoded data and never expires. But if it's a URL, the website may go offline.
Can I customize QR Code colors?
Yes, but ensure enough contrast between foreground and background for successful scanning.
What's the difference between PNG and SVG?
PNG is raster image for web use; SVG is vector image that scales without quality loss, ideal for printing.
Last Updated: 2026-06-04✓ Expert Verified
Quick and easy QR code generation!
Simple interface, great results.
Love this tool, use it all the time.