QR codes
Practical QR code guides: how QR codes work, how to create them, share Wi-Fi, add contacts, and prepare codes for everyday use.
What is a QR code and how does it work?
A QR code is a square two-dimensional code that can open a link, WiFi connection, contact, event, or other stored information after scanning. Here is a simple explanation for everyday use.
Are QR codes safe? How to scan them wisely
A QR code is not dangerous by itself. The risk is where it sends you and what the destination page asks you to do. Learn the quick checks before opening a scanned link.
QR code not working or scanning empty? Causes and fixes
Cannot scan a QR code, or does it scan but show nothing? The most common causes are weak contrast, a missing quiet zone, small size, blurry print, too much data or an expired dynamic code.
What size should a QR code be for print?
A QR code on a business card, flyer, and poster cannot use the same size. The right size depends on scanning distance, code density, print quality, and contrast.
