.html to None

I don’t really know how to ask this, but will as clear as I can.
I recently had my site migrated over to wordpress. All the links from former site are indexed with .html at the end, but now since migrated to wordpress the links don’t end with .html just a /

So what I’m wondering is if there’s some way I can create a custom permalink setting inside wordpress to solve the redirect issue and have the old .html link automatically redirect to the non .html links. I need help on this asap so any help is very much appreciated!