Wataru Kanzaki

You can easily create a block that allows visitors to compare and view two images using a slide bar. You can view it in fullscreen and see a larger image for comparison.
<a href="https://wickerwings.jp/" rel="nofollow ugc">See Demos</a>
<h4>Feature</h4>
<ul>
<li>Image display size can be specified</li>
<li>Changing the slider movement direction vertically and horizontally</li>
<li>Edit border style</li>
<li>Edit slidebar color</li>
<li>Fill in the captions</li>
<li>Fill in the description</li>
<li>Fullscreen display</li>
</ul>
<h4>Notes</h4>
<ul>
<li>Editing slidebar color is not supported on WordPress 6.1</li>
<li>If the browser does not support fullscreen, the image will be displayed in the full window. At that time, a fixed menu specific to the WordPress theme may be displayed.</li>
</ul>
<h3>Usage</h3>
<ul>
<li>Choose the left and right images from the image select buttons.</li>
<li>You can change preview mode and edit mode from the icon on the editing toolbar.</li>
<li>Some styles while editing are only applied in the preview mode.</li>
</ul>

Wicker Wings DabKrabe – Before After Image Comparison Block

keighl

Organize “before and after” style portfolios embedded within WordPress posts. Before/After allows you to select specific images out of your media library, and sort them into respective before and after groups from the post editing page. Useful for anyone who features their work or services (web-designers, artists, plumbers, etc.) on their site.
<a href="http://www.keighl.com/plugins/before-after/" rel="nofollow ugc">Support & Examples</a>
=Use=
<ul>
<li>Add images to your Media Library; these images will become available to you on the post add/edit page.</li>
<li>On the post add/edit page, simply drag images from the Media Library column into the Before and After columns.</li>
<li>To remove an item, double-click it.</li>
</ul>
=Template Tags=
=<code><?php $beforeafter->is_gallery( id ); ?></code>=
Returns true if there is a Before/After gallery associated with a particular post.
<ul>
<li>id:
<ul>
<li>A post id. Typically the current post, $post->ID</li>
</ul>
</li>
</ul>
=<code><?php $beforeafter->gallery( type , id , file , links , list , rel , limit ); ?></code>=
Returns the images stored in a particular Before/After gallery.
<ul>
<li>
type:
<ul>
<li>Determines which gallery to return: before or after.</li>
<li>Values: ‘before’ , ‘after’</li>
<li>Default: ‘after’</li>
</ul>
</li>
<li>
id:
<ul>
<li>The post id. If set to 0, will return images from all posts with Before/After galleries.</li>
<li>Default: 0</li>
</ul>
</li>
<li>
file:
<ul>
<li>Determines the type of image to return: the original image file, or the thumbnail.</li>
<li>Values: ‘thumb’ , ‘file’</li>
<li>Default: ‘thumb’</li>
</ul>
</li>
<li>
links:
<ul>
<li>If set to true, will wrap images with links to the original files.</li>
<li>Values: true, false</li>
<li>Default: true</li>
</ul>
</li>
<li>
list:
<ul>
<li>If set to true, wraps the image in </li>
<li> tags.</li>
<li>Values: true, fase</li>
<li>Default: false</li>
</ul>
</li>
<li>
rel:
<ul>
<li>Alters the default rel parameter for image links.</li>
<li>Default: ‘beforeafter’</li>
</ul>
</li>
<li>
limit:
<ul>
<li>Limits how many items are returned.</li>
<li>Default: all of ’em.</li>
</ul>
</li>
</ul>

Before/After

A "before and after" portfolio generator. Uses images uploaded to the media library; organize galleries from the post add/edit page.

Wicker Wings DabKrabe – Before After Image Comparison Block vs Before/After