Free Online CSR Generator (Apple Developer CSR) - Pure Tools

Free online CSR generator with Apple Developer CSR mode (email + common name) and an advanced mode for RSA/EC PKCS#10 CSRs with SAN/KeyUsage/EKU options.

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CSR / Certificate Request Generator

This tool uses browser WebCrypto to generate keys and a PKCS#10 CSR. Runs completely locally and never uploads your private key/CSR.

Apple Developer CSR mode: enter email + common name to generate a PKCS#10 CSR with a local RSA 2048 private key (SHA-256).

Subject (DN)

EmailCommon Name

Preview: -

Tutorial: Apply for an Apple Developer Certificate with a CSR

Enter email + common name, click “Generate CSR”, then download and securely store both the CSR and the private key (critical).
In Apple Developer → Certificates → “+”, choose a certificate type (iOS App Development / Apple Distribution, etc.) and upload the CSR generated here.
Download the issued `.cer` certificate file.
To use it in Xcode/CI, the certificate must pair with the private key. You can package `.cer + private key` into a `.p12` using the commands below, then import it into Keychain or use it for signing.

(Optional) Package as .p12 (recommended)

openssl x509 -inform DER -in ios_development.cer -out ios_development.pem

openssl pkcs12 -export -inkey private.key.pem -in ios_development.pem -out ios_development.p12

Tip: exporting a `.p12` will ask you to set a password. Never upload your private key or `.p12` to untrusted sites.

Output

CSR (PEM)

Private Key (PKCS#8 PEM)

Public Key (SPKI PEM)

Tip: Submit the CSR to your CA to request a certificate. Never upload your private key. This tool outputs a standard PKCS#8 private key.

Free Online CSR Generator (Apple Developer CSR) - Pure Tools

Free online CSR generator with Apple Developer CSR mode (email + common name) and an advanced mode for RSA/EC PKCS#10 CSRs with SAN/KeyUsage/EKU options.