Remove duplicates.
Paste lines and remove duplicates. Choose case sensitivity, trim before compare, and whether to keep the first or last occurrence.
Tool 17CleanupLive100% local
§ Same line, different times
One pass, unique lines.
Useful for log files, mailing lists, and any place a copy-paste left you with twins.
Are blank lines considered duplicates?
Yes — every blank line is identical to every other blank line by default. If you want to preserve them as separators, the Whitespace Remover gives you finer control.
What does “keep last” do?
It keeps the final occurrence of each line, in original position. Useful when later entries supersede earlier ones (e.g. config or env files).
Does this sort the output?
No. Order is preserved. For sort-then-dedupe, use the Line Counter — it has a unique-sort mode.