Remove Duplicate Lines
Delete repeated lines and keep only unique entries.
Lines0
Characters0
What is this?
Remove Duplicate Lines scans your text line by line and removes any repeats, leaving only the first occurrence of each unique line.
How it works
Each line is compared against the ones already seen. You can optionally ignore case, trim surrounding whitespace before comparing, and sort the final unique list alphabetically.
Use cases
- Clean up email or subscriber lists.
- Deduplicate keywords, tags or CSV columns.
- Merge multiple lists and strip repeats.
- Tidy log files before analysis.
FAQ
- Does it keep the original order?
- Yes, by default the first occurrence of each line is kept in its original position. Enable sorting to reorder alphabetically.
- Are blank lines removed?
- Duplicate blank lines are collapsed to one. To remove all empties, use the Remove Empty Lines tool afterward.