It calculates both directions
Instead of showing only A minus B, the tool also shows B minus A. For before/after data, that makes removals and additions visible in one run.
FREE WEB TOOL
Extract lines unique to list A or list B.
Compare two one-item-per-line lists and extract what exists only in A and what exists only in B. It is useful for checking member lists, IDs or before/after inventories.
apple, and the B-only result is orange. banana appears in both lists, so it is not a difference.Comparison is case-sensitive: ABC and abc are different items.
Instead of showing only A minus B, the tool also shows B minus A. For before/after data, that makes removals and additions visible in one run.
Each line is trimmed before comparison, so an accidental space at the beginning or end of a copied line does not create a false difference by itself.
If the same value appears several times in one list, it is still treated as one item for the difference check. Use a frequency/counting tool if the number of occurrences matters.
The same item is considered common even when it appears at different positions in A and B. Use a sequence-oriented comparison if ordering itself is significant.