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The
Ultimate Server
makes your sites more secure, more reliable, and more scalable than any other solution.

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Play screencast to see Caddy serve HTTPS in < 1 minute.

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Every
site on
HTTPS

By default, Caddy automatically obtains and renews TLS certificates for all your sites.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

The most advanced HTTPS server in the world

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Experience it

Discover Caddy's automagic HTTPS features.

Point any subdomain named caddydemo to:

A 1.2.3.4 AAAA ::f00

Then visit it in your browser.

You'll notice how Caddy provisions a certificate for your domain automatically.

Caddy is capable of serving TLS for any domains and IPs. This demo is intentionally restricted.

Not working? Make sure to use a subdomain of a registered domain, not a "sub-subdomain." Verify you have created the public DNS records shown above with the correct values. You may have to allow time for propagation. Consult your DNS provider's documentation or support for more information.

Example subdomains that could work: caddydemo.example.net, caddydemo.example.co.uk

A truly forward-thinking reverse proxy

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Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Production-grade static file server

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Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Flexible configuration for all production environments

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Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Unparalleled extensibility

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Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

The gold standard web server

Caddy keeps your sites up when other servers let you down.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.

Dynamically provision certificates

With On-Demand TLS, only Caddy obtains, renews, and maintains certificates on-the-fly during TLS handshakes. Perfect for customer-owned domains.