DATA CLEANUP / CSV
Remove duplicate CSV rows.
Choose what counts as a duplicate. Check what stays and what goes before exporting.
01
Open a file
Choose a CSV or TSV file
Comma, semicolon, and tab separators are detected. Up to 10 MB.
No file selected
02
Set the rule
Detected separator: . Your original values are kept; options below change comparison only.
Columns that identify the same record
BEFORE YOU EXPORT
Review the result
0Rows kept
0Rows removed
Kept rows
Removed rows
HOW MATCHING WORKS
Pick the key that matters.
For an exact duplicate export, compare the entire row. For contact lists, choose the email column so rows with the same email match even if the name differs. Choose whether the first or last version survives.
Whitespace and letter-case options affect matching only. Downloaded values stay as they appeared in the input. Always review the removed-row preview before using the cleaned file.