▤Free
CSV deduplicator
Keep the first row for each full-row or selected-column key.
Keep the first row for each full-row or selected-column key. Keep the first occurrence of each selected key and preserve the original order of retained rows. Leave the key column blank to compare the complete row instead of one cell.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
Input: a,b x,1 x,1 y,2 Key column (blank = entire row):
Example result
a,b x,1 y,2
Limitations and details
Comparison is exact and case-sensitive; rows sharing one selected key can lose different values in other columns.
Inputs and options
- Input
- Text
- Key column (blank = entire row)
- Text
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.