The best way to easily divide a large VCF file into smaller parts is by using trustworthy VCF splitter software such as
Softaken Split vCard Pro Software. Because this reliable vCard tool works offline and provides quick and 100% accurate results while maintaining all the contact information like full name, emails, and phone number. Plus, the tool supports all versions of the VCF format and runs smoothly on the latest Windows 11 & 10. A free demo is also available for all users so you can try this tool before purchasing.