Does it earn trust?
No mixed-content security warnings
We check this as: No mixed content (http:// sub-resources on an https page)
Why it matters
Mixed content happens when a secure page loads an insecure resource, and it can trigger browser security warnings that spook visitors. It usually happens on old sites patched together over the years.
How we deliver it
Every site we build loads every resource securely, so there is never a mixed-content warning to explain away.