If we imported your listings from another system, in some cases, this included a large number of duplicate images. If that is the case, we have a convenient tool that you can use to clean up those duplicates.
If you have a lot of images, we'll display a small Remove Duplicates at the bottom of the Images section when you edit your listing:
Click that and it will display:
Click Remove, and then wait while the system processes all of your images. When it is done, you'll see a notice like this:
Remember to save the listing after you've removed the duplicates, otherwise they won't be removed. If you changed your mind and would like keep the duplicate images, then you can refresh the page without saving.