VCF TRIAGE · PRACTICAL GUIDE
What Is a VCF File? Check Whether It Contains Contacts
By BestTools ·
A .vcf extension can refer to a contact vCard or an unrelated genomics file. Inspect a safe copy and identify the contents before trying a contacts importer.
Check the header, not only the extension
A contact card commonly has BEGIN:VCARD and END:VCARD boundaries with properties such as VERSION and FN. The synthetic example below is a contact card, with no personal information.
A genomics Variant Call Format file is a different format. If your file has genomics-style headers or variant columns, this contact workbench is not its viewer. Do not assume that every search result for VCF answers a contacts question.
BEGIN:VCARD
VERSION:3.0
FN:Synthetic Example
N:Example;Synthetic;;;
EMAIL:synthetic@example.invalid
END:VCARDRead the structure before choosing an action
VCF Triage inspects UTF-8 contact blocks and reports a limited set of warnings. It checks boundaries, recognizable property syntax and selected version/name requirements. It does not check the full vCard specification or certify a destination importer.
A file can contain several separate contact blocks. Treat each block as a record to review, rather than treating the file as a single contact or splitting at arbitrary line counts.
Choose an appropriate next step
| What you find | Useful next action |
|---|---|
| Complete contact blocks | Inspect a copy and choose a small set to test |
| Broken BEGIN/END boundaries | Preserve the file and examine the affected block |
| Unsupported encoding or legacy form | Return to a supported source export where possible |
| Genomics content | Use a tool intended for Variant Call Format data |
Keep private contact data out of unnecessary services
Contact files can contain names, telephone numbers, email addresses, notes and photographs. Use synthetic data for a first test and keep a backup of the original file and destination address book.
VCF Triage processes selected contents in the page and does not connect a contacts account. A diagnostic JSON omits field values, while a selected-originals download contains the contact data you deliberately choose. Review both kinds of file before sharing them.
Sources and further reading
Sources checked on 2026-10-26. Platform menus and supported formats can change.