Remove Duplicate Lines
Remove duplicate & empty lines from text.
100% private — runs in your browser, nothing is uploaded.
How to use the Remove Duplicate Lines
- 1Paste your list
Paste the text or list you want to clean into the input box.
- 2Choose options
Toggle remove duplicates, remove empty lines, trim spaces, ignore case and sort A–Z.
- 3Copy the cleaned text
The result updates live and shows how many lines were removed — click Copy result.
Examples
| Input | Output |
|---|---|
apple
apple
banana
cherry | apple
banana
cherry |
red
red
blue | red
blue |
Remove duplicate lines online
This duplicate line remover cleans up any list or block of text by deleting repeated lines. You can also strip blank lines, trim spaces, ignore case and sort the result alphabetically — all at once.
Great for
- Cleaning email lists, keyword lists and CSV columns.
- De-duplicating logs, URLs or exported data.
- Tidying up any messy list before using it.
Frequently Asked Questions
How do I remove duplicate lines?
Paste your text or list, keep “Remove duplicates” checked, and the result appears instantly with each line kept only once (the first occurrence).
Can it also remove blank lines and spaces?
Yes. Toggle “Remove empty lines” and “Trim each line” to clean up whitespace, and “Ignore case” to treat differently-cased lines as duplicates.
Is my data private?
Yes — all processing happens in your browser and nothing is uploaded.
Does it keep the original order of lines?
Yes, unless you enable Sort A–Z. By default the first occurrence of each line is kept in its original position and later duplicates are removed.
Can it remove duplicate words instead of lines?
It works on whole lines. To dedupe words, put each word on its own line first (for example by replacing spaces with line breaks), then remove duplicates.