About Remove duplicate lines
Remove duplicate lines online to clean a list of repeated labels or values. The tool can keep unique lines in original order by retaining the first occurrence of each exact line. It does not sort the list or trim the content of each line.
How to remove repeated lines from text
- Paste the list with one item per line.
- Select Process to remove exact repeated lines.
- Inspect the retained first occurrences and download unique-lines.txt.
A practical example
- Input
apple pear apple
- Result
apple pear
The first apple is retained. pear stays in its original relative position.
Supported input and limitations
- Comparison is case-sensitive and whitespace-sensitive. apple, Apple, and apple followed by a space are different lines.
- This is line deduplication, not CSV-record or column-based deduplication. Input is limited to 5 MB.
Processing happens on your device. Read about local processing and optional workspace recovery.
Frequently asked questions
Does removing duplicate lines sort the result?
No. First occurrences keep their original order. Use Sort lines separately if the result should be alphabetized.
Are uppercase and lowercase lines treated as duplicates?
No. Only exactly matching line strings are deduplicated. Normalize case first if that matches your intended workflow.