Remove Duplicate Lines
Remove duplicate lines from any list or text instantly.
Instant · Runs in your browser · No data sentProcessed locally in your browser.
About this tool
When you are working with lists — keyword lists, email lists, URLs, anything line-separated — duplicates are almost inevitable. Sorting through them manually is not realistic at scale. Paste your list here and the tool removes every duplicate line instantly, leaving you with a clean unique list.
How to use Remove Duplicate Lines
Paste your list into the text area — one item per line
Choose whether to keep the first or last occurrence of duplicates (most cases the first is fine)
Click the remove button and the cleaned list appears
Copy the de-duplicated list and use it wherever you need it
Frequently asked questions
- Is it case-sensitive?
- By default yes — "Apple" and "apple" are treated as different lines. Check the options if you want case-insensitive matching.
- Will it sort the remaining lines?
- No, it preserves the original order unless you also use the Sort Lines tool after removing duplicates.
- Does it work for CSV or tab-separated lists?
- It works line by line, so paste your list with one item per line for best results. CSV rows with commas will work but the entire row is compared, not individual values within a row.