Very good at finding identical and similar photos. Could do with better usability

I used Duplicate Photo Fixer to scan my library of over 20K images.

The good:
- I did not have any problems with stability or performance. Never crashed and scan completed in seconds.
- The settings for specifying how images are matched are quite comprehensive and easy to set.
- You can even specify a “Matching Level” after the scan to filter which duplicates it will display.
- metadata for the photos are displayed on the side

What could be improved:
- Tried to find keyboard shortcuts so that I can quickly select, view, compare and mark duplicates with having to constantly go to the trackpad on my MacBook. Perhaps these exist but I could not find them.
- The images that are displayed are larger than a typical thumbnail but in many cases not big enough to help me choose which image to discard. It would be very handy to enlarge a set of duplicates and to be able to quickly flip back and forth between them so that I could quickly see the differences and choose one photo over the other. Again, if this feature exists, it is not easy to find.

Yikyik about Duplicate Photos Fixer Pro, v1.8.1