How to Merge Multiple vCard Files to One File?
The reason why vCard file format is so useful is that one file can hold all your address book contacts. But how to merge multiple vCard files to one? The easiest way is to use some software such as vCard ImportExport, but there is another way without using any software, but windows command line interface.
1. Open command line interface (click Start > Run, or windows button + r and type cmd to launch it).
2. Navigate to the folder where multiple vCard files are by entering cd "D:\documents", if the folder is your documents.
3. Enter command copy /a *.vcf combinedfile.vcf.
Your all vCard files should be merged to a file combinedfile.vcf