.P7R File

The p7r file extension is used for certification purposes used in internet traffic communication.

The p7r file is used by various applications, like e-mail clients and used it for storing a a response to a digital certificate request.

Mime types:
application/x-pkcs7-certreqresp

A p7r file extension is related to response to a security certificate request file used by various apps for security reasons.

How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.