7 Common QR Code Mistakes and How to Avoid Them
Dead Link Destination
The most common mistake: the linked page isn't ready or has been deleted. Discovering broken links after mass-printing flyers or posters means expensive reprints.
Prevention: Always scan-test on a real device before print submission. Don't delete linked pages while printed materials are in circulation.
Print Size Too Small
Making QR codes too small for design reasons prevents smartphone scanning. Data-heavy QR codes have dense modules that blur when printed small.
Prevention: Ensure at least 15mm per side. Shorten URLs to reduce module count for large data. Scan-test at actual print size.
Missing Quiet Zone
Trimming the white margin (quiet zone) to pack in design elements prevents scanners from recognizing QR code boundaries.
Prevention: Maintain at least 4 modules of margin on all sides. Add a white border if the background isn't white.
QR-Only Access on PC Media
Placing only a QR code on websites or PDFs viewed on PCs forces readers to photograph their screen with a phone.
Prevention: On PC-viewed media, include a clickable URL link alongside the QR code.
No Performance Measurement
Installing QR codes without tracking scan counts or conversions means no data for improvement.
Prevention: Add UTM parameters to URLs for analytics tracking. Dynamic QR codes provide direct scan count data.
Poor Placement
Placing QR codes too high, in dark areas, or behind glass makes scanning difficult. A QR code near the ceiling on a train ad is nearly impossible to scan.
Prevention: Place at eye level (120-150cm). Choose well-lit locations. Avoid glass reflection angles.
Unclear Purpose
Adding QR codes with only "Learn more" gives no motivation to scan. Few people will pull out their phone without knowing what they'll get.
Prevention: Clearly state what scanning provides: "Get a coupon," "Watch how-to video," "Request free sample" - add action-driving text.