How to remove duplicate lines
- Paste your list into the top box, with one item per line.
- The bottom box instantly shows every line only once, in its original order.
- Copy the result or download it as a text file.
Options
- Ignore case – treats “Apple” and “apple” as the same line and keeps the first one.
- Ignore leading and trailing spaces – “apple ” and “apple” count as duplicates, and the extra spaces are removed.
- Remove empty lines – deletes blank lines from the result.
- Sort A→Z – sorts the unique lines alphabetically, with numbers in natural order (2 before 10).
FAQ
What can I use this for?
Cleaning email lists, keyword lists, product codes, log files, word lists, or merging two lists without repeats: paste both lists together and remove the duplicates.
Is there a size limit?
No fixed limit. Lists with hundreds of thousands of lines work fine on a computer; very large files depend on your device’s memory. Nothing is uploaded.