Find and identify duplicate lines in any list. Paste your list and instantly see all duplicates with statistics. Great for bulk text cleanup and quick copy-ready output in a single pass.
Duplicate Finder is a simple yet powerful tool for identifying repeated lines in any list. Whether you're cleaning up data, checking for duplicate entries in a spreadsheet, or validating unique values, this tool makes it easy to spot duplicates instantly.
Simply paste your list with one item per line, and the tool will show you which lines appear more than once, in the order they were found as duplicates. The statistics show you both the number of unique items that have duplicates and the total count of duplicate occurrences.
Paste your list of items, one per line.
Click the Find Duplicates button.
View the duplicates and copy the results.
Text processing utilities