QR Code FAQ
Clear answers to common questions about creating, scanning, printing and using QR codes.
Are QR codes free?
Yes. Static QR codes can be created and used for free. Some providers charge for dynamic QR codes, scan tracking or account features.
Can QR codes expire?
Static QR codes do not expire by themselves, but a linked website can stop working. Dynamic QR codes may depend on a paid service or provider.
Can QR codes be edited?
Static QR codes cannot normally be edited after creation. Dynamic QR codes can often have their destination changed through a provider dashboard.
What size should a QR code be?
The right size depends on scanning distance. For small print, test carefully and keep enough contrast and blank space around the code.
Can a QR code contain a PDF?
A QR code usually links to a PDF hosted online. The code stores the URL, not the entire PDF file.
Can QR codes be tracked?
Static QR codes are not usually tracked by themselves. Tracking normally requires a dynamic QR service or analytics on the destination URL.
Why is my QR code not scanning?
Common causes include low contrast, small size, damaged print, missing quiet zone, poor lighting or a destination encoded incorrectly.
Are QR codes safe to scan?
QR codes are generally safe, but the destination can be unsafe. Always check the preview URL before entering sensitive information.
Can I use a QR code on a business card?
Yes. Business cards often use QR codes for vCards, websites, portfolios, booking links or social profiles.
Can a QR code connect to WiFi?
Yes. A WiFi QR code can store the network name, security type and password so compatible phones can join more easily.