Paste the list
Add one item per line. Blank rows can be removed automatically.
List cleanup tool
Remove Duplicate Lines Online
Clean repeated values from keyword lists, exports, IDs, emails, or copied spreadsheet columns. Keep the first occurrence and preserve the useful order of your original data.
No upload Free to use Works on mobile
Clean tool
Remove Duplicate Lines
Options
Unique lines
0 resultsHow to use Remove Duplicate Lines
Choose case handling
Treat Apple and apple as the same value or keep them as separate values.
Copy clean results
The first occurrence is retained and the original order remains intact.
Common uses
Keyword cleanup
Remove repeated search terms before analysis or upload.
Email lists
Deduplicate copied addresses before importing contacts.
IDs and SKUs
Clean product codes, record IDs, and inventory values.
Remove Duplicate Lines FAQ
Does the tool preserve list order? +
Yes. It keeps the first matching value and preserves the order in which unique values first appeared.
Can it remove blank lines too? +
Yes. Blank lines are ignored in the cleaned output.
Is duplicate removal case sensitive? +
It is case insensitive by default. Enable case-sensitive mode if values with different capitalization must remain separate.
Keep working
Related list tools
Clean
Sort a List
Sort lines alphabetically, naturally, or numerically in ascending or descending order. Clean blank lines and organize lists online.
Format
List Case Converter
Change every line in a list to uppercase, lowercase, title case, or sentence case. Format keywords, labels, names, and copied columns online.
Format
New Line to Comma Separator
Convert a column or newline-separated list into comma-separated values. Add quotes, choose a custom delimiter, and copy the result online.
Compare
Compare Lists
Compare two lists online to find common items, items only in list A, and items only in list B. Case-sensitive and case-insensitive comparison supported.