You may notice some trophy lists may not always have trophy images and you will see a standard grey lock image as pictured below in its place:
If you have a trophy that the site doesn't have an image for then you could help us out by clicking on the below link. It will ask for your PSN sign in details and when you sign in, the site will automatically get that image.
Link To Sync Your Trophy Images
If you are having any issues or questions please feel free to ask.