De-duplicator for Google Photos

I have over 100K pics in my Google Photos account. Does anyone have experience with a de-duplicator that will scan my Google Photos pics and suggest deletions for de-duplication? It’s not a storage cost issue, more just clutter that gets in the way of searches.

I think you can do it on a hard drive. But ON Google photos. I think you are out of luck.

Edit: I also just did a quick search on Google on this issue. I didn’t see an option other than manually.