Membership Lock down will lock all post content including attached images, video, docs, and everything else, everywhere.
All who try to visit the site will be redirected to the login page.
The administrator can enable and disable the lock down as needed. 
Only registered website users will be able to access,
If a user is not logged in we will redirect them to the login page.

Membership Lock

Membership Lock down lets you easily lock all post content including attached images, video, docs, and everything else.

turtlepod

<a href="http://genbu.me/plugins/fx-login-customizer/" rel="nofollow ugc">f(x) Login Customizer</a> is a plugin to design and modify WordPress login page using Customize API.
After installation of this plugin, you upload logo and change your login page background from “Appearance > Customize Login”.
Features:
<ol>
<li>Super simple and easy to use.</li>
<li>Upload custom logo.</li>
<li>Change background color.</li>
<li>More features are coming.</li>
<li>Automatically change logo URL to site home page.</li>
<li>The GPL v2.0 or later license. 🙂 Use it to make something cool.</li>
<li>Support available at <a href="https://genbumedia.com/contact-us/" rel="nofollow ugc">Genbu Media</a>. 
Notes for developer: </li>
</ol>
<h4>Github</h4>
Development of this plugin is hosted at <a href="https://github.com/turtlepod/fx-login-customizer" rel="nofollow ugc">GitHub</a>. Pull request and bug reports are welcome.
<h4>Options</h4>
This plugin save the options in single option name: <code>fx-login-customizer</code>.

f(x) Login Customizer

Customize Login Page using the Customizer.

Membership Lock vs f(x) Login Customizer