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.

Robert Peake

Based on the original Random Redirect, this plugin enables efficient, easy random redirection to a post. Supports setting a category for all random redirects, shortcodes to generate URLs that can override the default category, and setting your own redirector URL. Designed to scale to handle high-traffic websites with thousands of posts by using a more efficient strategy than most other redirection plugins employ.
Based on the original Random Redirect by Matt Mullenweg https://wordpress.org/plugins/random-redirect/
Special thanks to Tim Green for providing additional quality assurance testing on the popular rattle.com website.

Better Random Redirect

Based on the original Random Redirect, this plugin enables efficient, easy random redirection to a post. Supports setting a category for all random re …

FX random image vs Better Random Redirect