.PEM File Extension
File TypePrivacy Enhanced Mail Certificate
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is a PEM file?
Base64-encoded certificate file, such as a PEM-encoded X509 certificate; used to authenticate a secure website; typically imported from a Unix-based Apache Web server and compatible with OpenSSL applications.
PEM certificate files are generated automatically and are not meant to be opened or edited manually. Some secure websites may ask users to upload a PEM file (possibly sent in an e-mail) in order to authenticate their identity.