this free plugin will fix your mixed content issue after install SSL. . It replaces all http:// with https:// in any output. Nothing to configure

fawadyk

Mubeen Khan

It easily solves the problem of mixed unsafe content.
Once a web page has its contents, such as CSS, JavaScript or graphics loads unencrypted, the browser reports the whole website as unsafe.
This message will appear with this or similar texts “Connection is not secure” and “Parts of this page are not secure. This can e.g. be graphics”.
Now you can check and correct all posts, comments, plugins and the theme…
Finished. There is nothing to configure.
The plugin simply replaces all http: // in the output with https: //.
However, if you still need unencrypted links, you can not use this plugin. But that should / should be there in the meantime only in exceptional cases.
Warning : 
This plugin may conflict with server based cache services like Nginx and Varnish and i cannot support it?s use on those servers.

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