VCF Comparer — Compare Two vCard Files
Upload two .vcf files and see exactly which contacts were added, removed, or changed between them. Everything runs locally in your browser.
Drag a .vcf here or click to choose.
Drag a .vcf here or click to choose.
Spot the differences instantly
Compare two contact files without uploading your data.
Three-way diff
Added, removed, and changed contacts are color-coded so differences are obvious at a glance.
Field-level changes
For changed contacts, see exactly which fields differ between the two files.
100% client-side
Both files are compared locally in your browser and are never uploaded.
How to compare two VCF files
Three steps, fully in your browser.
Upload file A
Drop your original .vcf file on the left.
Upload file B
Drop the updated .vcf file on the right.
Review the diff
See added, removed, and changed contacts, and export the differences.
VCF Comparer — FAQ
Is this VCF comparer free?
Yes. It is completely free and runs in your browser with no sign-up required.
How are contacts matched between files?
Contacts are matched by a normalized phone number or email; if neither exists, they are matched by name.
Are my files uploaded to a server?
No. Both files are compared locally in your browser, so your data never leaves your device.
What counts as a change?
A contact present in both files but with different fields — phone, email, name, address, and so on — is marked as changed.
Explore more contact tools
Need to merge, deduplicate, or convert your contacts? Explore the full toolset.