File extension: .vcf, .vcard Developed by: Internet Mail Consortium Type of format: Electronic business card MIME: text/vcard vCard is a file format standard for electronic business cards. vCards are often attached to e-mail messages, but can be exchanged in other ways, such as on the World Wide Web or instant messaging. They can contain name and address information, telephone numbers, e-mail addresses, URLs, logos, photographs, and audio clips.