When importing references, or when using Tools -> Find duplicates, JabRef displays side-by-side potential duplicated references. It is then up to you to keep one of them, or to merge these references.
To help you in this task, JabRef currently offer 5 comparison modes.
Which one do you use?
- Plain text
- Show diff - character
- Show diff - word
- Show symmetric diff - word
- Show symmetric diff - character