.pem

Privacy Enhanced Mail container, the Base64 format for certificates and keys used in TLS

Syntax highlighted

Format facts

MIME type: application/x-pem-file
Apple UTI: public.x509-certificate
Stock Quick Look: shown as plain text
Planned approach (census): syntax-highlight
Icon hint: generic-icon
Prevalence: universal

Renderer note (from the census)

pure Go parse PEM blocks

Gotchas: base64 encoded keys/certs