Keep the encoded content simple
Shorter URLs and text produce less dense QR patterns. If you control a long URL, a clean redirect URL can make a code easier to print at smaller sizes.
Generate the code
Use the QR Code Generator, choose a size and error-correction level, then download the PNG.
Leave quiet space around it
Do not crop tightly around the pattern. The blank margin helps scanners distinguish the QR code from surrounding graphics.
Always test the final version
Scan the exported code on multiple phones, especially after it is placed into a design or printed. Low contrast, glossy material and tiny physical size can all reduce reliability.
Try the tools: Links in this guide point to free MyLaptopTools utilities that are relevant to the topic.