Always review the output VCF in a plain text editor before importing into your primary address book. Test with 2–3 sample contacts first.

# Example JSON data json_data = [

The conversion process is essentially a "mapping" exercise. A converter takes specific keys from a JSON object and assigns them to the standardized fields of a vCard. "firstName": "Jane" → FN:Jane "phone": "555-0199" → TEL;TYPE=CELL:555-0199 "email": "jane@example.com" → EMAIL:jane@example.com

Do you have a specific JSON structure that won't convert? Share your schema in the comments below, and we will help you build a custom mapping script.

Great for one-off tasks. You upload the file, and the site spits out a .vcf . Note: Be cautious with sensitive data on free public sites.