The software has a built-in quality indicator on the toolbar. This shows a green smiley face for good quality images, orange for acceptable quality, and red for low quality. Please note that this takes into account the image size only, and not the content, so if your image is blurred (e.g. camera shake or poor focus), this will not be shown on the quality indicator.
If your image is showing an orange or red face, you can resize your image. This will improve the print quality (as less stretching will occur).
We print at 300 dpi.