PNG and SVG are viable options for printing QR Codes, but they have some differences that might make one a better choice than the other depending on your specific use case. PNG (Portable Network Graphics) is a raster graphics file format with lossless data compression. It is a popular choice for displaying images online, and most web browsers widely support it.

When printing a QR Code in PNG format, it is important to ensure the resolution is high enough to avoid pixelation. On the other hand, SVG (Scalable Vector Graphics) is a vector graphics file format that uses XML-based markup language to describe images. SVG files are resolution-independent, meaning you can scale them to any size without losing quality.

This makes SVG a good choice for printing QR Codes, especially when printing them in different sizes. In general, SVG might be the better option if you need to print QR Codes in a variety of sizes or if you need to make changes to the QR Code frequently. However, if you print QR Codes in a fixed size and don't need to make changes frequently, a PNG format may be sufficient.