Remove Duplicates
About Remove Duplicates
Lists assembled from several sources collect repeats — email addresses, keywords, product codes. Removing duplicate lines leaves one of each and preserves the order of what remains.
How to use it
- Paste your list, one item per line.
- Remove the duplicates.
- Copy the cleaned list.
Worth knowing
Matching is literal, so trailing spaces, differing capitalisation and stray punctuation make two identical-looking lines count as different. Tidy the list first if the results look wrong.
Common questions
- Is the order kept?
- Yes — the first occurrence of each line stays where it was.
- Can I find the duplicates instead of removing them?
- This produces the de-duplicated list; compare counts before and after to see how many were removed.