I am currently working on a project which must include content from third party CDN&#x27;s. Unfortunately, lots of them do not support HTTPS at all. So while my site safely serves everything over HTTPS from origins I control, random images I&#x27;m including from elsewhere make it look like something is very wrong. Shouldn&#x27;t at least CDN&#x27;s at this point switch to HTTPS-only? There is no downside in including HTTPS resources in pages served over HTTP.