Generate a Self-Signed Certificate

Create a complete certificate set: private key, CSR, certificate, and PKCS#12 bundle.

  1. Domain
  2. Identity
  3. Options
  4. Review
What domain or hostname is this certificate for?
Enter a fully qualified domain name (e.g. www.example.com) or use *.example.com for wildcard.
Add Subject Alternative Names (SANs) — optional extra domains or IPs
The CN is automatically included as a SAN. Add extra DNS names or an IP address here.
Organization details (all optional, improves certificate subject)
Certificate options
RSA 2048 — Industry standard. Maximum compatibility with all browsers, servers, and devices. Good default choice.
RSA 4096 — Stronger RSA key. Required by some government and compliance standards (FIPS, NIST). Larger file size.
ECDSA P-256 — Elliptic curve. Much smaller keys and faster TLS handshakes. Widely supported in modern browsers.
ECDSA P-384 — Stronger elliptic curve. Required for CNSA suite compliance. Good balance of security and performance.
Ed25519 — Edwards curve. Smallest keys and fastest signing. Cutting-edge; not yet supported by all software.
Free Certificates up to 30 days are free.
— Requires a one-time purchase via Stripe. You'll be redirected after clicking Generate.
Review your certificate details
Please fix the following before generating:
Common Name
SANs
Organization
Department
Email
Country
State / Province
City
Key Type
Expiration Paid Free
Password password (for private key and PKCS#12)
Certificates longer than 30 days require a one-time purchase (). You'll be securely redirected to Stripe to complete payment, then your certificate will be generated automatically.