Aciano Technologies

AT Gallery is a simple and easy-to-use gallery plugin for WordPress that allows you to add bulk images to a gallery, display galleries with a shortcode, and show images in a lightbox on the frontend.
Key Features: 
– Create galleries using a custom post type. 
– Bulk image upload support. 
– Manage gallery images in the admin panel with options to remove individual images. 
– Display galleries using a simple shortcode <code>[atga id="gallery_id"]</code>. 
– Images open in a lightbox for a smooth user experience. 
– Easy to use with a minimal configuration.
<h3>Usage</h3>
Once activated, you can create galleries by going to the AT Galleries menu item in your WordPress admin. Here’s how to use the plugin:
<ol>
<li>
Add a new gallery:
<ul>
<li>Go to AT Galleries > Add New.</li>
<li>Add a title and select the images you want to add to the gallery.</li>
<li>You can add images using the Select Images button, and you will see them listed with a remove button if you wish to delete individual images.</li>
<li>The gallery shortcode will be displayed at the top of the editor. Copy the shortcode and paste it into any page, post, or widget.</li>
</ul>
</li>
<li>
Display the gallery on the frontend:
<ul>
<li>Use the shortcode <code>[atga id="gallery_id"]</code> where <code>GALLERY_ID</code> is the ID of the gallery you want to display. You can find the gallery ID in the URL when editing a gallery.</li>
</ul>
Example shortcode: 
 `[atga id=”gallery_id”]“`
This will display the gallery with the specified ID.
</li>
<li>
Images open in a lightbox:
<ul>
<li>The gallery images will automatically open in a lightbox when clicked, providing a smooth user experience for your visitors.</li>
</ul>
</li>
</ol>
<h3>Developer Notes</h3>
<ul>
<li>The gallery images are stored as post meta under the key <code>_at_gallery_images</code>.</li>
<li>You can use <code>wp_get_attachment_image()</code> to display images in the gallery or customize the output to fit your theme’s needs.</li>
<li>The plugin is fully extendable. You can modify the display template by overriding the template in your theme if needed.</li>
</ul>
<h3>License</h3>
This plugin is licensed under the GPL-2.0-or-later license. You are free to modify and redistribute it as long as you adhere to the terms of the license.

AT Gallery

A flexible WordPress gallery plugin to create galleries, upload bulk images, display them with shortcodes, and view in a lightbox.

evocateur

Takes <a href="http://famspam.com/facebox/" rel="nofollow ugc">Facebox</a> and wires it up for sweet WP action. Also makes julienne fries. Maybe.

WP Facebox

Automagically invoke Facebox on gallery items and linked images in a post or page.

AT Gallery vs WP Facebox