We do not recommend artificially resizing the image.
It is a common practice to try to increase an image's resolution (e.g., from 72 DPI to 300 DPI) hoping to improve its print quality. However, editing software cannot create details that do not exist in the original capture.
The impact on print quality: By forcing an increase in file dimensions (interpolation), the image does not gain real definition. On the contrary, this process tends to degrade visual quality, resulting in an image that lacks sharpness (blurred appearance) or has accentuated digital noise (grainy appearance or visible dithering).
Our technical recommendation: Always send the original file. Our professional printing equipment is calibrated to guarantee excellent results with files starting from 200 native DPI.
It is preferable to preserve the natural sharpness of the original file rather than trying to manipulate it digitally, which will inevitably introduce unwanted artifacts in the final print.