PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
SysTools Excel to vCard Converter - SysTools Excel to vCard Converter easily export Excel XLSX to vCard VCF File Format
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
Softaken Excel to VCard Converter - Softaken Excel to vCard Converter to export various Excel contacts to vCard
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
Excel to vCard Converter - The Excel to vCard converter software export multiple Excel sheets into vCard / VCF format at once.