CSR Generator
Generate a CSR certificate signing request and PEM private key with SAN domains, RSA, and ECDSA support.
Generate a PEM private key and CSR from domain, SAN, and organization details before ordering an HTTPS/SSL/TLS certificate.
Supports RSA 2048/3072/4096 and ECDSA P-256, with copy and download actions for the CSR and private key.
Security note: the private key is returned only in this request and is not written to the site database or files. Save it immediately and avoid generating production keys on untrusted devices or public networks.
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Common use cases
- Use this page before ordering an HTTPS certificate when you need a CSR, private key, and SAN list prepared quickly.
- It is useful for Nginx, Apache, CDN, and cloud SSL workflows where a certificate authority asks for a CSR.
- When one certificate needs to cover several subdomains, add them to SAN and generate a matching request.