.pfx — Personal Information Exchange
A password-protected container bundling a private key together with its certificate, used for code signing and TLS setup.
Also known as: .p12
Contains cryptographic key, certificate, or credential material. Handle private keys and credentials carefully, and never share them with anyone you don't fully trust.
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Frequently asked questions
What is a .pfx file?
A password-protected container bundling a private key together with its certificate, used for code signing and TLS setup.
Can I edit a .pfx file?
Not directly as text — .pfx is a runnable or packaged format, not one meant for manual editing.
Does having a .pfx extension mean the file is safe?
No single extension can guarantee that. Contains cryptographic key, certificate, or credential material. Handle private keys and credentials carefully, and never share them with anyone you don't fully trust. Always consider where the file came from, not just its name.