PhotoStructure will definitely take care of deduplicating your photos and videos, but it doesn’t do other file types.

I’d use the latest alpha build, by the way: I’ve made a ton of improvements from the stable release (I hope to promote the alpha build through beta and stable soon).

In any event, it’s good to think about what you actually mean by a duplicate file. I’ve written about this here: https://photostructure.com/faq/what-do-you-mean-by-deduplica...

Also: once PhotoStructure has examined your files, you can decide what to do with the “duplicates”: https://photostructure.com/server/tools/#show-me-all-the-dup... (and pipe the result through xargs).

Have a full online backup before starting this project!