Efficiently assessing the quality of an electronic check image by determining whether the check image is suitable for image quality analysis prior to performing the image quality analysis. A check processing module of a check processor can determine whether the check image is suitable for image quality analysis by validating certain tags in the image. For example, such validation can include determining whether the check image includes certain mandatory tags and whether any optional tags present in the image are valid. The check processing module can determine that the check image is not suitable for image quality analysis if it does not include the mandatory tags or if it includes any invalid optional tags. The check processing module can assign a failure value to any check image that is not suitable for image quality analysis. The failure value can indicate a reason for the unsuitability of the check image.