GUIDE
How to Compare Two VCF Contact Backups
Comparing backups is safer than importing both and hoping the address book deduplicates them. Start with counts, then review the records that differ.
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What you should know
Comparing backups is safer than importing both and hoping the address book deduplicates them. Start with counts, then review the records that differ.
Before you begin
- Keep an untouched copy of the source export.
- Work on a small sample before changing a complete address book.
- Review the downloaded file before importing it elsewhere.
Compare identity signals first
Use normalized phone numbers, email addresses, UIDs, and names as evidence. No single signal is perfect: shared family numbers and reused work addresses need human review.
Review field-level differences
A newer backup may contain a better phone number while an older backup has a private note or photo. Choose the field intentionally instead of replacing an entire card blindly.
- Select the two copied backups.
- Compare parsed counts and duplicate identities.
- Open changed records and inspect fields.
- Create a new reviewed VCF from the chosen values.
Keep both originals
The comparison result is a decision aid, not a destructive merge. Archive both source files with their export dates so the choice can be revisited.
Questions people ask
Does How to Compare Two VCF Contact Backups change the original file?
No. The browser works with the selected copy and creates a separate download. Keep the original export as your rollback point.
What should I verify after How to Compare Two VCF Contact Backups?
Compare counts and representative fields, validate the generated copy, and test a small import before processing a full address book.