PNG and SVG formats are the best formats to download your QR code if you want to print it. PNG images for display are a popular choice, but when printing PNGs, the resolution should be as high as possible to avoid pixelation. SVG files, on the other hand, remain resolution-independent, so they don't lose quality. Especially when printing in various sizes, SVG is the best choice. However, if printing at a fixed size and frequent changes are not needed, then a PNG file can be a suitable choice. Utilizing both options is ideal for the printing process.