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.

grandllama

Llama Shuffle is a lightweight utility plugin that lets you serve a random image from your WordPress Media Library or a list of URLs.
It is designed to be: 
* Host-agnostic (works on managed hosts like Pressable, WP Engine, Kinsta) 
* AI-friendly (no redirects required when using the REST endpoint) 
* Simple, fast, and free — no upsells, no tracking, no external services
Common use cases: 
* Random header or hero images 
* Promotional image rotation 
* AI image reference workflows 
* Lightweight image shuffling without sliders or page builders
Images can be grouped using Image Sets (a custom Media Library taxonomy), or supplied via a plain-text URL list.
Built by Barking Llama Designwerks.
<h3>Features</h3>
<ul>
<li>Random image selection from Media Library attachments</li>
<li>Image grouping via Image Sets taxonomy</li>
<li>Optional URL list mode (one URL per line)</li>
<li>Portable endpoint:
<ul>
<li><code>/llama-shuffle</code></li>
<li><code>/random-image</code> (alias)</li>
</ul>
</li>
<li>REST API endpoint (no redirects):
<ul>
<li><code>/wp-json/llama-shuffle/v1/url?set=header</code></li>
</ul>
</li>
<li>Cache controls for performance</li>
<li>Shortcode support</li>
<li>No JavaScript required</li>
<li>No upsells, ads, or telemetry</li>
</ul>
<h3>How to Use</h3>
<h3>Media Library Mode (Recommended)</h3>
<ol>
<li>Go to Media → Library (List view works best)</li>
<li>Edit or bulk-edit images</li>
<li>Add one or more terms under Image Sets (for example: <code>header</code>, <code>promo</code>, <code>seasonal</code>)</li>
<li>Set the Default Set in plugin settings</li>
</ol>
Example endpoints:
/llama-shuffle 
/llama-shuffle?set=header 
/random-image?set=promo
<h3>REST API (Recommended for scripts & AI workflows)</h3>
GET /wp-json/llama-shuffle/v1/url?set=header
Response: 
{ 
 “set”: “header”, 
 “url”: “https://example.com/wp-content/uploads/2026/02/example.png” 
}
<h3>URL List Mode</h3>
Switch Source Mode to URL List in settings and paste one image URL per line.
Optional section headers allow multiple pools:
[set:header] 
https://example.com/a.jpg 
https://example.com/b.jpg
[set:promo] 
https://example.com/c.jpg
<h3>Shortcode</h3>
Display a random image in content:
[llama_shuffle set=”header” alt=”Random image” class=”my-class”]
<h3>Developer Notes</h3>
Llama Shuffle is intentionally small and dependency-free.
The plugin avoids file-extension-based endpoints (such as <code>.jpg</code>) to remain portable across managed WordPress hosts where static asset handling may bypass WordPress rewrites.
For automation, scripts, or AI workflows, the REST API endpoint is the recommended integration point:
GET /wp-json/llama-shuffle/v1/url?set={slug}
This endpoint returns a direct image URL without redirects and can be safely consumed by external services.
Image pools are implemented as a non-hierarchical attachment taxonomy (<code>llama_image_set</code>). This allows images to belong to multiple sets without duplication.
Candidate image IDs are cached using WordPress transients to reduce database load. Empty caches are automatically refreshed to avoid stale states.
The plugin does not enqueue scripts, register blocks, or add front-end assets. All output is server-side.
There are no external API calls, tracking scripts, or upgrade paths.

Llama Shuffle — by Barking Llama

The Loose Llama Randomizer. Serve a random image from Media Library image sets or a URL list via a portable endpoint or REST API.

FX random image vs Llama Shuffle — by Barking Llama