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CSV Toolkit
Clean, filter and normalize CSV or TSV data locally.
Primary CSV or TSV file
Rows
-
Columns
-
File size
-
Select a file to inspect columns.
Remove duplicates
Remove empty rows
Remove empty columns
Rename headers
Change one column name.
Current header
New header
Mapping preview
Filter rows
Keep only matching rows.
Column
Operator
Equals
Does not equal
Contains
Starts with
Value
Separator
Auto-detect
Comma
Semicolon
Tab
Clean CSV
Download cleaned file
Merge two files
Match rows through a shared column.
Choose a column present in both files, such as EmployeeID or UserPrincipalName.
Second CSV file
Matching column
Select both files first
Action
Merge locally