Mixed content occurs when a webpage loaded securely over HTTPS still contains some resources — such as images, scripts, or stylesheets — loaded insecurely over HTTP, creating a security vulnerability and often triggering browser warnings.
Mixed content issues commonly arise after migrating a site from HTTP to HTTPS, when some internal links or embedded resources weren’t fully updated to use the new secure protocol.
Resolving mixed content typically involves systematically updating all internal resource references to use HTTPS, and can often be automated through search-and-replace tools during a site migration.
We resolve mixed content issues as part of HTTPS migrations within our Technical SEO service.