A name is required so the QR represents a usable contact
Other fields can be left out, but the generator does not create an unnamed vCard.
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Create a vCard QR code from name, organization, phone, email, and URL fields.
Create a vCard 3.0 contact QR containing a required name plus optional organization, title, phone, email and URL. It is useful on business cards, booths or profiles where manual contact entry would be inconvenient.
Contact apps do not map every vCard field identically. Test the saved contact on representative iPhone/Android devices, especially organization, title and URL fields.
Other fields can be left out, but the generator does not create an unnamed vCard.
A QR on a badge, website or printed card exposes every included phone number, email address and URL to anyone who can scan it.
The white margin is part of reliable scanning. Avoid placing borders, text or artwork directly against the QR edge after exporting it.
SVG can be enlarged cleanly in layout software, while PNG is convenient for web pages and general image workflows.
Final size, print quality, camera focus and contact-app behavior still matter, so scan the finished artifact on real devices.