Find Insecure http:// Links in Content (WP-CLI)
Adds a "wp find-http-links" command that lists posts containing http:// images, scripts or links, marking which point to your own domain, to clean up mixed content after moving to HTTPS.
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Fix Old Subsite URLs After Domain Mapping
Rewrites links and image URLs that still point at a site's old network address (like example.com/shop/) to its mapped domain when content is displayed.
Upgrade http:// Links to Your Own Site to https://
Rewrites old http:// links and images pointing to your own domain to https:// when content is displayed, fixing "not secure" mixed content warnings after moving to SSL without editing every post.