Our product determines them as "duplicate" photos based on user habits and the built-in difference algorithm, and as you see, can safely delete one of them - because even if the black "heart" shape is really needed, it can be realized in one minute. Of course, whether to delete or not is not compulsory, you can observe this subtle difference through the preview area, if you need to keep it, just uncheck it. Please note that the size of preview area can be adjusted, just drag and drop the separator between the list and preview area.