Free SSL Certificate Generator

Yes. Let's Encrypt is a nonprofit certificate authority that gives away certificates trusted by every major browser. It secures most of the encrypted web. The generator on this page issues you a free Let's Encrypt certificate in a few minutes, and the private key never leaves your browser.

Free certificates from any browser-trusted CA use the same encryption. Let's Encrypt, Google Trust Services, and ZeroSSL differ mostly in rate limits, tooling, and how you prove you control the domain. Pick the one your tools support. There is no encryption difference to shop for.

Yes. Google Trust Services issues free certificates through the same ACME protocol that Let's Encrypt uses. Google platforms like Firebase provision them automatically. For a server you run yourself, this generator gets you the same result from Let's Encrypt.

You can create a self-signed certificate with OpenSSL, but browsers won't trust it and visitors will see a warning. For a certificate browsers accept, a certificate authority has to validate your domain. That is what this tool does: enter your domain, set up one HTTP redirect to prove you control it, and the certificate is issued from your browser.

Let's Encrypt certificates last 90 days. No public CA can issue a certificate longer than 200 days as of March 2026, and the ceiling drops to 47 days by March 2029. That schedule is why most teams eventually automate renewal instead of reissuing by hand.

Yes, but wildcard certificates require DNS validation instead of an HTTP redirect. Use the free wildcard certificate generator.