Duplicate Line Remover
Remove duplicate lines from a list, optionally ignoring case and surrounding spaces.
Runs in your browser. Your input is processed on your device and is not uploaded to our server.
How to use the Duplicate Line Remover
- Paste your list with one item per line.
- Choose whether to ignore case, trim spaces and remove empty lines.
- Click Remove duplicates. The first occurrence of each line is kept in its original order.
Useful for cleaning email lists, keyword lists, log extracts and CSV columns. The tool keeps the first occurrence of each line and reports how many duplicates were removed.
Frequently asked questions
Does it change the order of lines?
No. Lines keep their original order; only later repeats are removed. Use the Text Sorter if you also want to sort.