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Data Cleaner

Detect and fix duplicates, missing values, outliers, whitespace issues in your CSV data

About Data Cleaner

Detect and fix data quality issues in your CSV files directly in your browser — find duplicates, missing values, outliers, and whitespace problems.

How to use Data Cleaner

  1. 1Paste your CSV data or import a file.
  2. 2The tool automatically scans for issues: duplicates, missing values, whitespace, outliers, and inconsistencies.
  3. 3Review the issue summary with counts per category.
  4. 4Select which fixes to apply (remove duplicates, trim whitespace, remove empty rows).
  5. 5Click "Clean data" and download the cleaned CSV.

Tips

  • Always review the issue details before applying fixes to avoid removing data you actually need.
  • Run the cleaner before importing data into databases or analytics tools to prevent errors.
  • Use the outlier detection to identify suspicious values that might indicate data entry errors.

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OneKitTools TeamUpdated 2.21.4