Protocol
HTTPS is a ranking signal and a security requirement. HTTP pages, mixed content (HTTP resources on HTTPS pages), HTTP links, and protocol-relative URLs all undermine the security and consistency of an HTTPS site. These five checks identify every protocol-level issue that affects security and search engine trust.
Page serves over HTTP — Google uses HTTPS as a ranking signal; browsers show warnings.
An HTTPS page loads some resources over HTTP — browsers block or warn on mixed content.
Outbound links use http:// on an HTTPS page — inconsistent protocol in outlinks.
Sitemap lists HTTP URLs for a site that serves HTTPS — crawlers are pointed to the wrong version.
Resources use // URLs without a protocol — problematic on non-HTTPS pages.
Audit HTTPS securityacross your site
A full audit surfaces every protocol issue — from non-HTTPS pages to mixed content and HTTP links on HTTPS pages.