High-resolutions files ensure that the final printed output is of the highest quality, capturing all the details of the original image or design. High resolution files provide more detail on the printed image and reduce blurriness. They can also better represent colors, gradients, and subtle variations in the design. When printing, especially in large formats the image or design needs to be scaled without loss of quality. High resolution files allow for scaling without the image becoming fuzzy or pixelated, maintaining the integrity of the design.