DSmidge

<p>When WP is opened through HTTPS, all local absolute links in content are replaced from HTTP to HTTPS.<br />
Additional hosts can be specified through admin interface (like graph.facebook.com which works on HTTP and on HTTPS).<br />
Options HOME and SITEURL shuld be changed to HTTPS when enabling this plugin.</p>


HTTP to HTTPS link changer by Eyga.net

When WP is opened through HTTPS, all local absolute links in content are replaced from HTTP to HTTPS.

shawfactor

Asitha

<p>This plugin send the proper headers for full ssl security. For more information on what this is and why it is important visit: http://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security</p>
<p>The options are preset to enable browsers to preload the HSTS directive but can be overwritten by filters which are clearly documented in the code.</p>
<p><strong>Did you find this plugin helpful? Please consider <a href="https://wordpress.org/support/view/plugin-reviews/lh-hsts" rel="ugc">writing a review</a>.</strong></p>
<h3>To update the max-age settings, add the following code to your functions.php</h3>
<pre><code>add_filter('lh_hsts_max_age', 'modify_ls_hsts_max_age_func');

function modify_ls_hsts_max_age_func( $max_age ){
    return false;
}
    `

<h3>To update the subdomain settings, add the following code to your functions.php</h3>

</code></pre>
<p>add_filter(‘lh_hsts_subdomain’, ‘modify_ls_hsts_subdomain_func’);</p>
<p>function modify_ls_hsts_subdomain_func( $subdomain ){<br />
    return false;<br />
}<br />
    `</p>
<h3>To update the preload setting, add the following code to your functions.php</h3>
<pre><code>add_filter('lh_hsts_preload', 'modify_ls_hsts_preload_func');

function modify_ls_hsts_preload_func( $preload ){
    return false;
}
    `

<h3>To update the redirect setting, add the following code to your functions.php</h3>

</code></pre>
<p>add_filter(‘lh_hsts_redirect’, ‘modify_ls_hsts_redirect_func’);</p>
<p>function modify_ls_hsts_redirect_func( $redirect ){<br />
    return false;<br />
}<br />
    `</p>


LH HSTS

Using with WordPress 4.9.4 and can verify the correct header is being set. Thanks!

Works Splendidly

HSTS is HTTP Strict Transport Security, a means to enforce using SSL even if the user accesses the site through HTTP and not HTTPS.

HTTP to HTTPS link changer by Eyga.net vs LH HSTS