Toolgebra/Tools/Data Operations
CSV Deduplicator

CSV Deduplicator

Remove duplicate rows from CSV files with flexible matching rules

Data Operationscsvdeduplicateuniquedata-cleanup
Input

Upload or paste CSV data to deduplicate

0 / 1,000,000 characters

Parameters

Character used to separate values

How to identify duplicate rows

Which occurrence to keep when duplicates are found

Delimiter to use in output CSV

normalization

Ignore case when comparing text (e.g., 'abc' = 'ABC')

Remove leading/trailing spaces before comparison

Replace multiple spaces with single space (e.g., 'a b' → 'a b')

Remove punctuation characters (,.;:-_) before comparison

Output

Output will appear here after executing the tool

Processing happens entirely in your browser - your data stays private

CSV Deduplicator - Free Online Tool | Toolgebra