Remove duplicate lines from any list or text — keeps the first occurrence.
Click the input box and paste your content using Ctrl+V or the Paste button.
Select the mode or settings in the options bar above the editor — they differ per tool.
Hit the centre button to run the transformation. Your result appears instantly in the output panel.
Click Copy to grab your result, or Download to save it as a .txt file.
It compares every line in your text and removes any line that has already appeared before it. The first occurrence of each line is always kept, and the original order of unique lines is preserved.
Yes — "Apple" and "apple" are treated as different lines. To remove case-insensitive duplicates, first convert your text to lowercase using our Lowercase Converter, then deduplicate.
Yes — the stats bar below the editor shows exactly how many lines were removed, how many were kept, and the percentage reduction.
Yes — it is perfect for deduplicating keyword lists, email lists, CSV rows, or any line-separated data.
Yes. All processing happens in your browser. Nothing is uploaded.
