.csr — Certificate Signing Request
A file generated when requesting a digital certificate from a certificate authority, containing the public key and identity info to be certified.
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 .csr file?
A file generated when requesting a digital certificate from a certificate authority, containing the public key and identity info to be certified.
Can I edit a .csr file?
Not directly as text — .csr is a runnable or packaged format, not one meant for manual editing.
Does having a .csr 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.