Converting a directly to a file is generally not possible because these formats serve entirely different purposes is a compressed image file, whereas a (or PKCS#12) is a secure, password-protected container for digital certificates private keys
(required) – Do not lose this!
When signing PDFs with a digital certificate, many organizations want their logo to appear in the signature field. The logo (JPG) must be embedded into the PFX. Jpg To Pfx Converter Online Free -UPD-
To verify the JPG is inside the PFX: