Listdelta

COUNTED LINE-LIST COMPARISON

What stayed?
What changed?

Compare two pasted lists, one item per line. See shared, removed and added occurrences while keeping every duplicate in the count.

01 · Enter the two lists

Direction: B relative to A

Plain text, one item per CRLF/LF/CR line. Commas stay inside an item; this is not a CSV parser. Up to 2,000 physical lines and 250,000 UTF-16 code units per list, and 500 Unicode code points per line.

Define what counts as the same line

Empty keys after the chosen options are ignored. Non-ASCII case is always preserved. No fuzzy or semantic matching.

02 · Reconcile the occurrences

How the counts add up

Count occurrences, then compare keys.

The example contains four items in each list. Two occurrences are shared. A has one extra bolt and washer; B has one extra nut and pin. There are four distinct keys in the union, even though each list also has four total occurrences.

Your options define the comparison. Trimming, ASCII case and canonical Unicode normalization can merge lines that would otherwise remain separate. The report records those choices.

Read the examples, exact rules and sources ↗