This plugin allows you to add and image as background of posts, pages or custom post type in general (in the same way as a thumbnail).
<ul>
<li>This is a rewrite of my old plugin <a href="https://wordpress.org/plugins/post-background/" rel="ugc">Post Background</a> which I do not have access anymore. *</li>
</ul>

WP Post Background

This plugin allows you to add and image as background of posts, pages or custom post type in general (in the same way as a thumbnail).

Sarven

Easy Fullscreen Slider allows you to add background fullscreen slider or single fullscreen image. You can set default settings for all posts/pages or set individually settings for each page/post. 
After activation you must change the disable option and add images.
This plugin uses jQuery library <a href="http://buildinternet.com/project/supersized/" title="Supersized webpage" rel="nofollow ugc">Supersized</a>.
<h4>Options</h4>
Transition effect:
<pre><code>'none' - No transition effect
'fade' - Fade effect
'slideTop' - Slide in from top
'slideRight' - Slide in from right
'slideBottom' - Slide in from bottom
'slideLeft' - Slide in from left
'carouselRight' - Carousel from right to left
'carouselLeft' - Carousel from left to right
</code></pre>
Transition speed:
<pre><code>Speed of transitions in milliseconds
</code></pre>
Slide interval:
<pre><code>Time between slide changes in milliseconds
</code></pre>
Controlls:
<pre><code>Show arrows navigation
</code></pre>
Autoplay:
<pre><code>Determines whether slideshow begins playing when page is loaded
</code></pre>
Disable:
<pre><code>Off slider
</code></pre>
Progress bar:
<pre><code>Show progress bar
</code></pre>
Thumbnail navigation:
<pre><code>Show thmubnails
</code></pre>
Background pattern:
<pre><code>Add background pattern
</code></pre>

Easy Fullscreen Slider

An easy-to-use WordPress fullscreen slider plugin for Supersized.

WP Post Background vs Easy Fullscreen Slider