Transferring thousands of contacts from iPhone and Android can be frustrating if you rely on online converters or manual methods — they often crash or take too long. The easiest way to handle large VCF files without errors is to use a professional offline converter. Softaken VCF to CSV Converter manages big contact lists smoothly and lets you combine hundreds or even thousands of contacts into a single CSV. You can preview entries, remove duplicates or empty fields and pick the format you need—Google CSV, Outlook CSV, or Default CSV. Since everything runs on your computer, your data stays private and intact, giving you a clean CSV ready for Excel, CRM, or Outlook.