Some JSON structures nest contacts deeply. Here's how to flatten them:
The ability to map JSON keys (e.g., fname , mobile ) to VCF fields (e.g., FN , TEL ) is crucial for data accuracy.
: While it focuses on the VCF format itself, this foundational paper explains the structure that JSON converters must mimic. Source : VCFtools (PMC3137218)
# Handle multiple phone numbers phones = contact.get('phones', []) for phone_obj in phones: tel = vcard.add('tel') tel.value = phone_obj.get('number') tel.type_param = phone_obj.get('type', 'OTHER').upper() json to vcf converter
When building a converter or using advanced tools, use this mapping table to align your data fields correctly: Target Contact Asset Sample JSON Key Required vCard Element "fullName" FN:John Doe Split Name "lastName" , "firstName" N:Doe;John;;; Mobile Phone "mobile" or "phone" TEL;TYPE=CELL:+1555000111 Work Email "workEmail" EMAIL;TYPE=WORK,INTERNET:hi@co.com "jobTitle" TITLE:Software Engineer Organization "company" ORG:Innovate LLC; Troubleshooting Common Conversion Issues 1. Multi-line Contacts Merging Into One
You might have JSON data from multiple sources that you need to turn into actionable contacts. Common scenarios include:
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Support for non-standard fields like custom tags, notes, or social media handles.
Combine the JSON arrays into a single array first (using a text editor or jq ), then convert. Python makes this trivial: all_contacts = json1 + json2 .
Set VERSION:3.0 or VERSION:4.0 at the top of each card block. Older legacy tools sometimes default to version 2.1, which modern platforms may reject. If you need help setting up your file conversion, tell me: What programming language or tool do you prefer to use? How large is your JSON file size ? Can you share a sample contact object from your JSON data? Some JSON structures nest contacts deeply
Yes. Use an online JSON to VCF converter or a no-code automation tool like Zapier (though Zapier handles CSV better). Many free web tools exist for this specific purpose.
For directory processing:
A typical JSON contact object looks like this: Source : VCFtools (PMC3137218) # Handle multiple phone
Ensure every contact block ends with END:VCARD followed by a standard newline ( \n ). 2. Special Characters Displaying Wrongly (Encoding Errors)