Free Online Duplicate Row Finder
Paste or upload CSV data to detect duplicate groups, choose full-row or key-column matching, and export both a human-readable duplicate report and cleaned CSV outputs.
Duplicate Row Finder
Find duplicate rows in CSV data by entire row or selected key columns, review duplicate groups, and download unique rows or duplicate rows.
Upload CSV or text file
Files are processed locally in your browser.
Load a sample or paste your data to begin.