Clean lists before importing
Deduplicate emails, IDs, SKUs, URLs, or keywords before passing them to another tool.
Keep the first occurrence of each line and drop the rest. The original order is preserved so logs, lists, and exports stay readable.
Combine with Sort Text Lines for a clean canonical view.
Are blank lines preserved?
Only the first blank line survives if you keep blanks; use the Remove Empty Lines tool to remove them entirely.
Is order preserved?
Yes — the first occurrence of each line stays in place.