- How do I import the .vcf file into my phone or email app?
- iPhone / iOS: AirDrop the .vcf to your phone, or email it to yourself and tap the attachment — iOS will offer to add all contacts. Google Contacts: open contacts.google.com → Import → select the .vcf. Outlook: File → Open & Export → Import/Export → Import a vCard file. macOS Contacts: double-click the .vcf or drag it onto the Contacts app.
- What is the difference between vCard 3.0 and vCard 4.0?
- vCard 3.0 (RFC 2426) is supported by virtually every app and device, including older Outlook versions and iOS. vCard 4.0 (RFC 6350) adds UTF-8 by default, grouped properties, and richer media fields, but some older apps cannot import it. When in doubt, use 3.0 — it is the default here.
- What columns does my CSV need?
- There are no required column names — you map them yourself after upload. Typical useful columns are: First Name, Last Name, Email, Phone, Company, Title, Street, City, State, ZIP, Country, Website, Notes. If your file has a single "Name" column rather than split first/last, map it to Full Name (FN) and leave the N fields blank. The converter will use FN as the display name in the vCard.
- Is my data sent to any server?
- No. All processing happens in your browser using JavaScript. Your file is never uploaded anywhere. This is intentional — contact lists often contain sensitive personal data, so keeping everything local is the right call.
- My CSV has multiple phone numbers or emails per row — can I include them all?
- Yes. Map additional phone/email columns to the same vCard field type (e.g. map "Work Phone" to Phone (work) and "Mobile" to Phone (mobile)). The converter writes a separate TEL line for each non-empty value, so the resulting vCard will carry all of them.
- How many contacts can I convert at once?
- There is no hard limit — the converter processes contacts entirely in memory in your browser. In practice, tens of thousands of rows work fine. Very large Excel files (100 MB+) may take a few seconds to parse with SheetJS, but smaller files are near-instant.