Duplicate Line Remover
Paste a list and remove every repeated line in one step. The first occurrence of each line is kept in its original position, and QuickUtila shows how many duplicates were removed.
- Original lines
- 8
- Final lines
- 6
- Duplicates removed
- 2
Processed in your browser as you type. Your text is never uploaded or stored.
How Duplicate Lines Are Detected
Each line is compared with every line that came before it. If an identical line has already appeared, the later copy is removed. Leading and trailing spaces are ignored when comparing, so “apple” and “apple ” count as the same line.
Turn on “Ignore case” to treat “Apple” and “apple” as duplicates, and “Remove blank lines” to drop empty lines at the same time.
- 1Input: apple, banana, apple, cherry, banana
- 2Keep the first apple and banana; remove the repeats
Therefore: Result: apple, banana, cherry — 2 duplicates removed.
When Is a Duplicate Line Remover Useful?
- Cleaning email lists
- Deduplicating data exports
- Tidying to-do and shopping lists
- Keyword and URL lists
- Log files and code output
- Guest and attendee lists
Frequently Asked Questions
Yes. Lines stay in the order they were entered; only later repeats are removed.
By default, yes — “Apple” and “apple” are different lines. Turn on “Ignore case” to treat them as duplicates.
Blank lines are kept unless you turn on “Remove blank lines”. They are never counted as duplicates of each other.
No. The tool deliberately keeps your original order so nothing is rearranged without you knowing.