When I changed my contacts one by one, in fact, many empty fields appeared in the final file. It indicated dirty and unorganized. Later I found that an intelligent VCF to CSV converter can solve this problem very easily. It allows users to skip blank data automatically while they export VCF contacts to CSV. I chose WholeClear vCard to CSV Converter, and its ignore empty columns feature was the way out for me from the cleaning work. This software is capable of batch VCF to CSV conversion; thus, I kept away from the trouble of errors when I handled hundreds of contacts all at once. In addition, it allowed me to make a perfect transition from vCard to CSV with only the filled fields like names, emails, and phone numbers. The final CSV file turned out to be smooth and visually user-friendly, suitable for immediate use in Excel.