SSL / HTTPS
fast.site automatically issues and renews free SSL/TLS certificates for every domain. Powered by Let's Encrypt and CertMagic for zero-maintenance security.
How automatic SSL works
DNS Routing
You route your domain DNS to the fast.site network.
First Request
The first HTTPS request arrives at our global Edge Server.
ACME Challenge
CertMagic initiates a challenge with Let's Encrypt automatically.
Instant Issue
Certificate is issued and installed in a matter of seconds.
Auto-Renewal
Certificates are renewed 30 days before they expire.no action needed.
SSL Modes
| Mode | Description | Use Case |
|---|---|---|
| None | HTTP only. No HTTPS support. | Not recommended |
| Auto (Default) | Automatic Let's Encrypt certificate issuance. | All production domains |
| Custom | Upload your own certificate and private key. | Commercial / Wildcard certs |
Custom Certificates
If you use a certificate from a commercial CA (DigiCert, Sectigo, etc.), you can upload it directly to fast.site.
Certificate File
docs.pages.ssl.custom.certFormat
Private Key
docs.pages.ssl.custom.keyFormat
Note: You are responsible for monitoring and renewing custom certificates before they expire. fast.site cannot auto-renew third-party certificates.