How to generate 300dpi QR code using PHP QR Code Library ? They have size ranged from 1-40, with maximum size 984px (72dpi). My client wants me to work on a program that can generate printable version, which requires 300dpi and at least 5 inches of each side.
They have size ranged from 1-40, with maximum size 984px (72dpi)
No, they do not specify the DPI. DPI is an interpretation of the picture which can be specified at will.
An image has a given amount of pixels and a DPI suggestion, the DPI is not an intrinsic property of the pixel based image.
If you want a 5 by 5 inches picture at 300dpi, you simply need to have a 1500 by 1500 pixel image.