CSR.plus

CSR generation API for developers. One curl, no OpenSSL.

About CSR.plus

Generate a Certificate Signing Request (CSR) and private key with a single curl command — no OpenSSL installs, no config files, no signup, no API key. Returns the CSR and private key as JSON, supports RSA, ECDSA and Ed25519 keys. Open-source (MIT) with example scripts in curl, Bash, Python and JavaScript. Also includes a CSR decoder, SSL certificate checker and expiry monitor — all free and unlimited.

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