Why does my website say “Not Secure” in Google Chrome’s address bar?

The “Not Secure” warning triggers when your primary domain lacks an active SSL/TLS security certificate, or when legacy image links or code paths load over unencrypted HTTP protocol tunnels.

“This is almost always a missing or expired SSL certificate, or a few resources still loading over old HTTP links. I’ll get everything secured properly within 24 hours for $99.”
— Jeff Bollettino, Managing Director, Ignite Conversions