The duplicate finder is one of the most invaluable tools in Jabref. It would be great if the user has more control on the tool; for a through searching of duplicates, just like Bookends. Searching by just the title; author, year, and the combination of them would give a power for the user to clean up duplicates.
I don’t know which of the fields the current duplicate finder checks. But, I have a number of duplicate entries with the same Title. It is not detecting them. Look at this entry, for example.
The Titles are exactly the same.