Duplicate file finder

[Dino101]

Awesome, thanks. I've installed it and I'm trying "Exact Match (Slow)" mode, but I don't see a lot of details about how the search indexing work. Does it actually look at the file's metadata and SHA256?

You are correct, there is no clear indication as to how the software works but WiseCleaner is a reputable company.  An alternative would be for you check out Duplicate File Finder Plus  which is excellent, I have used it in the past with success.  It conducts searches based on contents and not on the name of the file.
Link:  https://thesoftware.shop/duplicate-file-...-giveaway/