Caddy Has a Free Web Server — Automatic HTTPS Without Configuration

Caddy is a modern web server that automatically provisions and renews HTTPS certificates — zero configuration needed.

What You Get for Free

• Automatic HTTPS — Let's Encrypt certificates, auto-renewed
• HTTP/3 — QUIC support out of the box
• Reverse proxy — load balancing, health checks, retries
• File server — serve static files with one command
• API-configurable — change config via REST API, no restarts
• Caddyfile — human-readable config format
• Plugins — DNS providers, auth, rate limiting
• Single binary — no dependencies, easy deployment

Quick Start

# Serve current directory with HTTPS
caddy file-server --domain example.com
# That's it. HTTPS certificate obtained automatically.

# Caddyfile — reverse proxy
example.com {
    reverse_proxy localhost:3000
}
# Save as Caddyfile, run: caddy run
# HTTPS is automatic. Zero SSL configuration.

Why Developers Switch from Nginx

Nginx requires manual SSL setup, certbot crons, and cryptic configs:

• Zero SSL config — HTTPS just works, certificates auto-renewed
• Readable config — Caddyfile vs nginx.conf complexity
• API-driven — update config without restarts via REST API
• Memory-safe — written in Go, not C (no buffer overflow risks)

A DevOps engineer spent 2 hours configuring Nginx + Let's Encrypt + cron renewal for a new domain. With Caddy: 3 lines in Caddyfile, HTTPS working in 30 seconds.

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