Contacts
5 tools, including CSV to VCF, Merge VCF files, VCF to CSV and VCF to JSON. All free, with no account and nothing to install.
CSV to VCFBuild a vCard file your phone can import from a spreadsheet of contacts.Merge VCF filesCombine several vCard files into a single address book you can import once.VCF to CSVTurn a vCard address book into a spreadsheet-ready CSV, one contact per row.VCF to JSONExport a vCard address book as structured JSON, with emails and phones as arrays.VCF viewerOpen a .vcf file and read the contacts it holds, without importing them anywhere.