Paste your list into the text area — one item per line, just as you would in a text editor.
Toggle Case-sensitive if you want "Apple" and "apple" treated as different lines.
Toggle Ignore spaces at line edges to trim whitespace before comparing.
Click Remove Duplicate Lines — see how many duplicates were removed and how many unique lines remain, then copy the result.
All processing happens locally. Your text/data never reaches any server.
Results appear instantly as you type or paste. No page reloads needed.
No sign-ups, no limits, no watermarks. Use it as much as you want.
Responsive design works on desktop, tablet, and mobile browsers.
Yes — the first occurrence of each line is kept, and subsequent duplicates are removed, preserving the original order of your list.
When case-sensitive is off, "Apple" and "apple" are treated as the same line. When on, they are considered different lines and both are kept.
The input text is replaced with the deduplicated result. Save a backup before processing if you may need to revert to the original list.