How do different Excel to vCard converters handle large datasets differently?

[danielwriter]

Large datasets expose weaknesses quickly. Some converters load the entire Excel file into memory, which causes slowdowns or crashes. Others process contacts row by row, which is more stable and scalable. The difference usually comes down to how the software manages memory and validation. Reliable Excel to vCard converters include preview, chunked processing, and error handling for large files. Tools like Softaken Excel to VCF Converter are designed to handle bulk data without freezing because they separate scanning, mapping, and exporting stages. Unstable tools often skip validation, which speeds things up initially but increases failure rates with big datasets.