The problem
I have a file for a label with a QR code. After printing, the QR code reads poorly with my phone, but it works fine on the monitor. How can I figure out what the problem is?
Cause and analysis
The QR code reads well on screen but poorly in print: the problem is likely in the resolution or PDF compression exported from Illustrator, not in the QR code design itself.
If you used the default PDF export settings, it is possible that the DPI is insufficient for printing or that compression has degraded the fine details of the QR code.
Solution proposed by GPX
1. The PDF export resolution is below 300 DPI, causing QR code pixelation in print. 2. The exported PDF applies JPEG compression to vectors or raster elements, degrading the sharp contrasts needed for QR code reading. 3. The color profile or color separation in printing has altered the contrast between black modules and the QR code background.
Limitations of this analysis
This analysis is generated with the support of Artificial Intelligence: always verify its correctness and applicability before using it. The reliability level of this analysis is "Medium", not the highest possible.