What is the issue with importing to Lightroom? You can do this at the same time as you upload the images so no extra process and LR will also make a back up at the same time if you wish.
Dave
Haven't used it myself but I believe that it refers to this software product - https://darkroom.co/What is this "darkroom"? (by which I mean I presume it's not an actual darkroom nor the company "darkroom" who seem to support even photographers)