Deduplicate text while controlling comparison rules and output order.
Remove duplicate lines from text instantly. Supports keeping original order, removing empty lines, case-insensitive matching, and trimming whitespace.
The duplicate line remover compares one line at a time, keeps the selected occurrence and reports input, result and removed counts.
[email protected]
[email protected]
Exact mode compares the original line; normalized mode can trim whitespace and ignore case.
REQ-1001 REQ-1002 REQ-1001
REQ-1001 REQ-1002
Keeping the first item preserves its original position; keep-last uses the final occurrence position.
LumaTool lumatool
LumaTool
Exact mode compares the original line; normalized mode can trim whitespace and ignore case.
Processing happens locally in this browser. Your text or file is not uploaded to LumaTool servers.
Clean an email or ID list.
Deduplicate localization terms.
Reduce repeated log lines before analysis.
[email protected] REQ-1001 REQ-1002 REQ-1001 LumaTool lumatool
Exact mode compares the original line; normalized mode can trim whitespace and ignore case. Keeping the first item preserves its original position; keep-last uses the final occurrence position.
Processing happens locally in this browser. Your text or file is not uploaded to LumaTool servers.
Choose only the options needed to turn one text item per line into the unique lines and counts; the defaults preserve the least surprising behavior.
Review validation messages and compare a representative sample before using the result in production.
Yes. The workspace and result controls adapt to desktop and mobile browsers.
Enabling trim when leading spaces are meaningful. Sorting when the source order must be preserved.
Processing happens locally in this browser. Your text or file is not uploaded to LumaTool servers.
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