Simple widget to show the latest/random images of the WordPress media library as a Widget, using a shortcode or directly with a php-function.

Noted That:

To install correctly this gallery-widget.zip.
Fisrt Download the gallery-widget.zip to your computer
Extract/Open gallery-widget.zip to Your Computer.
Then, Find readme.txt file inside gallery-widget.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "gallery-widget.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "gallery-widget.zip" Downloaded plugin from your computer, Where you downloaded gallery-widget.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Gallery Widget" folder is added on left sidemenu. Now, Click on "Gallery Widget" folder.

Noted that: If you do not see "Gallery Widget" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Gallery Widget Configurtions and Settings or How to work "Gallery Widget" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "Gallery Widget" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Gallery Widget
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide

Guide
Upload the ‘gallery_widget’ folder to the ‘/wp-content/plugins/’ directory Activate the plugin through the ‘Plugins’ menu in the WordPress admin Go to Design->Widgets, activate the “Gallery Widget”, adjust the title and max number of images to your needs or use the php-object `$galleryWidget` in your template (see here ) Warning: Cause of the way the attachments are fetched using the standard option (all), even images of not yet published posts are shown. If this is a problem for you, you should use the option (include or exclude), although it is less optimized.

Upload the ‘gallery_widget’ folder to the ‘/wp-content/plugins/’ directory
Activate the plugin through the ‘Plugins’ menu in the WordPress admin
Go to Design->Widgets, activate the “Gallery Widget”, adjust the title and max number of images to your needs
or
use the php-object $galleryWidget in your template (see here )

Warning: Cause of the way the attachments are fetched using the standard option (all), even images of not yet
published posts are shown. If this is a problem for you, you should use the option (include or exclude), although it
is less optimized.

widget, using, shortcode, function, library, directly, wordpress, show, latestrandom, images,

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Reffered: https://wordpress.org/