To convert SSL certficiate into PFX format, run
openssl pkcs12 -export -out certificate.pfx -inkey private-key.key -in certificate.crt -certfile ca-certificate.crt
Example for SSL from namecheap/ssls
openssl pkcs12 -export -out certificate.pfx -inkey serverok_in_key.txt -in serverok.in/serverok.in.crt -certfile serverok.in/serverok.in.ca-bundle
