CSV Clean

CSV Cleaner



  

  
How to Use the CSV Cleaner Tool


  

    The CSV Cleaner helps you clean, format, and optimize CSV files quickly.
    You can remove duplicates, fix formatting issues, strip whitespace, delete unwanted
    columns, and then export a cleaned CSV file instantly. Perfect for data analysts,
    spreadsheet users, and anyone working with messy CSV data.
  


  
1. Paste Your CSV Data

  
    
    
  • Copy and paste your CSV data directly into the text box.
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  • The tool supports quoted fields, commas inside quotes, and multi-line rows.
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  • No upload required — all processing happens in your browser.
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2. Select Cleaning Options

  
You can customize exactly how your CSV should be cleaned:

  
    
    
  • Trim whitespace – Removes extra spaces around fields.
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  • Remove empty rows – Filters out rows with no meaningful data.
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  • Remove duplicate rows – Keeps only unique rows.
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  • Remove duplicate columns – Removes columns that share the same header name.
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  • Remove specific columns – Enter column names separated by commas (e.g., id,email).
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3. Clean the CSV

  

    Click Clean CSV to process the data.  
    Any parsing issues (unbalanced quotes, malformed rows, etc.) will appear in the error box.
  


  
4. View and Export the Results

  
    
    
  • The cleaned CSV is displayed in an output box.
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  • Click Copy Cleaned CSV to copy it to your clipboard.
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  • Click Download CSV to save the cleaned file as cleaned.csv.
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Troubleshooting Tips

  
    
    
  • If you see “CSV is empty or invalid,” make sure your pasted data follows CSV structure.
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  • Quoted fields must be properly closed (double quotes need to be escaped as "").
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  • If columns disappear, check whether you enabled “duplicate column removal.”
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    This tool is ideal for preparing data for spreadsheets, databases, analysis workflows,
    or import/export systems. Everything runs locally for maximum speed and privacy.