About the Remove Duplicate Lines
This line deduplicator uses a stable comparison, so the earliest instance stays in its original position. Optional case-insensitive matching is useful for mailing lists, tags and copied table columns.
How to use the Remove Duplicate Lines
- Paste one item per line.
- Choose whether capitalization should affect matching.
- Remove duplicates and verify the retained order.
Practical tips
- Trim surrounding spaces first when visually identical lines do not match.
- Use case-sensitive mode for identifiers where A and a are distinct.