Text UtilitiesText CleanersFree Tool
Remove Duplicate Lines
Remove repeated lines from a list, keeping only the first occurrence of each unique line, in original order.
How to Use Remove Duplicate Lines
- 1Paste your list, one item per line
- 2Click Convert
- 3Copy the deduplicated list
About Remove Duplicate Lines
What it does
The tool splits your text at line breaks, keeps the first occurrence of each distinct line and drops the later copies. The original order is preserved, so the output reads like the input with repeats removed. It does not sort.
Example
Input lines apple, banana, apple, cherry, banana become apple, banana, cherry.
Exact matching, which is what you need to know
- Case-sensitive.
Appleandapplecount as different lines and both stay. - Whitespace counts. A line with a trailing space is not equal to the same line without one, so tidy up spacing first if you see duplicates that survive.
- Blank lines are lines too. Only the first empty line is kept, which also removes extra blank gaps between paragraphs.
Common uses
Cleaning email or keyword lists, deduplicating log excerpts, tidying URL lists before building a sitemap, and preparing lists for import into a spreadsheet. For counting what you have left, use the word counter.
Frequently Asked Questions
By exact text match — two lines are considered duplicates only if they're character-for-character identical, including capitalization and trailing spaces.
The first occurrence of each unique line is kept, and later duplicates are removed; the surviving lines stay in their original relative order.
Yes — 'Apple' and 'apple' are treated as different lines and both kept, since the comparison is an exact match.
No — deduplication happens entirely in your browser.