How to use pfx certificate in postman?

Postman Canary Update has support for PFX Files now. You may use that build instead. enter image description here

At the time of writing this answer Postman didn't support .PFX files. Ref: Feature Request: Support for PFX

However you can extract cert and private key from the .PFX file using openSSL and configure those in Postman.

Extract key:

openssl pkcs12 -in pfxfile.pfx -nocerts -out key.pem -nodes

Extract cert:

openssl pkcs12 -in pfxfile.pfx -nokeys -out cert.pem

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