I need to import a large VCF file into Google Contacts, but it’s too big to upload at once. I split it into smaller files, but some contacts fail to import or cause errors. I’m worried the splitting process is breaking the file format. Does anyone know a reliable way to split VCF files so they import into Google Contacts smoothly without issues?

Split VCF for Google Contacts Without Errors (Easy & Safe Method)
If the contacts are not imported from the split VCF file, then the problem lies with the splitting of the VCF file, which breaks the format of the file. Google Contacts is very particular about the format of the vCard file, i.e., the VCF file.
If the splitting of the VCF file is done properly, then the import of the contacts can be done smoothly using the Google Contacts application.
A good VCF splitter should:
1. Split the large VCF files into smaller files.
2. Ensure the correct format of the BEGIN:VCARD and END:VCARD tags are maintained
3. Ensure all the contact information is maintained properly in the split files
4. Support all vCard versions for smooth Google Contacts import
I had the same issue and fixed it using GainTools Address Book Manager. It performs accurate bulk VCF splitting and creates files that import into Google Contacts without errors.