Remove Duplicate Lines
Delete repeated lines from a list, with optional sorting and trimming.
Text Tools
LIST → DEDUPED
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Lists pile up duplicates fast — merged email exports, copied logs, keyword research. This tool strips repeated lines so only unique entries remain, and can optionally sort and trim whitespace at the same time for a perfectly clean list.
How to remove duplicates
- Paste your list, one item per line.
- Choose whether matching should ignore case and surrounding spaces.
- Optionally sort the result alphabetically.
- Click Clean and copy your de-duplicated list.
What gets removed
| Setting | Treats as duplicate |
|---|---|
| Default | Exactly identical lines |
| Ignore case | “Apple” and “apple” |
| Trim spaces | “cat ” and “cat” |
Cleaning features
- Keeps the first occurrence of each unique line.
- Optional case-insensitive and whitespace-trimming matching.
- Optional alphabetical sort of the result.
- Reports how many duplicates were removed.
Frequently asked questions
Does it preserve order?
By default yes — it keeps the first time each line appears and removes later repeats, leaving the original order intact.
Can it ignore empty lines?
Blank lines are collapsed when trimming is on, so you will not end up with a column of empty rows.
Is it good for cleaning email lists?
Yes. Turn on ignore-case and trim spaces to catch near-duplicates that differ only by capitalization or stray spaces.