AivarasFX

Plugin creates widget that displays one random image from current page or post attached images, or from any page or post set by ID. You can set size of image to display.
Displays a random image from post or page you specify. Plugin creates FX-Random-image widget. Use widget to add image to sidebar or add <code><?php FX_Random_Image($pageID, $link, $size); ?></code> function to theme. $pageID is page/post ID from there to take images, if $link = true adds link to image, $link = false no link on image, $size – image size (‘thumbnail’, ‘medium’ or ‘large’). Example <code><?php FX_Random_Image(1, false, 'large'); ?></code>

FX random image

Plugin displays random image from attached images to page or post.

Mark Westguard

Image Roulette is a plugin that allows you to create galleries from your Media Library and display a random image from those galleries using either shortcodes or Gutenberg blocks. Perfect for displaying rotating testimonials, featured products, random artwork, or any content where you want to show variety.
<h4>Features</h4>
<ul>
<li>Create Custom Galleries: Organize your Media Library images into custom galleries</li>
<li>Random Image Display: Show a different image each time the page loads</li>
<li>Gutenberg Block Support: Native block editor integration</li>
<li>Shortcode Support: Use anywhere shortcodes are supported</li>
<li>Flexible Image Sizing: Choose from registered image sizes or set custom dimensions</li>
<li>Aspect Ratio Preservation: Smart resizing that maintains image proportions</li>
<li>Accessibility Ready: Full support for alt text, captions, and screen readers</li>
<li>User-Friendly Admin: Intuitive interface for managing galleries</li>
<li>Bulk Operations: Select, edit, and delete multiple images at once</li>
</ul>
<h4>Usage</h4>
Creating a Gallery: 
1. Go to Settings → Image Roulette in your admin dashboard 
2. Click “Create New Gallery” 
3. Enter a gallery name 
4. Select images from your Media Library 
5. Save your gallery
Using the Block: 
1. Add the “Image Roulette” block to any page or post 
2. Select your gallery from the dropdown 
3. Configure image size settings 
4. Publish your content
Using the Shortcode: 
 [imagro id=”gallery_1″]
Shortcode Parameters: 
* <code>id</code> – Gallery ID (required) 
* <code>size</code> – Registered image size (thumbnail, medium, large, full) 
* <code>width</code> – Custom width in pixels 
* <code>height</code> – Custom height in pixels
Examples: 
* <code>[imagro id="gallery_123" size="large"]</code> 
* <code>[imagro id="gallery_123" width="300"]</code> 
* <code>[imagro id="gallery_123" width="400" height="300"]</code>
<h3>Credits</h3>
This plugin was inspired by a request from @michelleames for speednetworkonline.com to create an accessible random image block.

Image Roulette – Random Image Block

Display a random image from your Media Library galleries with full accessibility support. Spin the wheel of images!

FX random image vs Image Roulette – Random Image Block