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Remove Duplicate CSV Rows

Keep the header and first occurrence of each complete CSV row. Compare cells exactly, including case and spaces.

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Keep the header and first occurrence of each complete CSV row. Compare cells exactly, including case and spaces.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Choose the options, then run the tool.
  2. Check the result, then copy or download it.

Example

name,score
Ada,87
Ada,87 → name,score
Ada,87

Details and limitations

Processing stays in your browser.

Format references

Tool page updated: