Automatic HTTPS Rewrites safely rewrite HTML source links from HTTP to HTTPS without requiring manual URL changes to resources in your HTML source.
If you currently connect to your site over HTTPS and the lock icon is not present in the URL or displays a warning icon, your site may contain references to HTTP assets. See our guide on troubleshooting mixed content for further details.
Enable Automatic HTTPS Rewrites via the Crypto app to rewrite HTTP resources as HTTPS at Cloudflare without making any changes to the HTML source at your origin server.
Before a rewrite is applied, the HTTP resources are checked to ensure they are accessible via HTTPS. In cases where a resource is not available over HTTPS, Cloudflare cannot rewrite the URL.