Rangdom

Find what two lists share — and what they don't

Paste two sets of emails, IDs, SKUs, feature flags, or route names, one item per line, to see which entries are in both, only in List A, or only in List B. Each side is trimmed and deduped first, then matched by value, so the order you paste in doesn't matter. Toggle case-insensitive matching when casing shouldn't count.

This is a set comparison, not a line-by-line diff. For a positional, longest-common-subsequence comparison of two text versions use Text Diff; to remove duplicate lines from a single list use Duplicate Line Remover.