Noted That:

• To install correctly this magic-post-thumbnail.zip .
• Fisrt Download the magic-post-thumbnail.zip to your computer
• Extract/Open magic-post-thumbnail.zip to Your Computer.
• Then, Find readme.txt file inside magic-post-thumbnail.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 Tips Below.

Start the Tips:

1. First Download " magic-post-thumbnail.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 " magic-post-thumbnail.zip "  Downloaded plugin from your computer, Where you downloaded magic-post-thumbnail.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " Magic Post Thumbnail " folder is added on left sidemenu. Now, Click on " Magic Post Thumbnail " folder.

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

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

After Activated Plugin According to Step-6 then,

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

1. Activate the plugin
2. Go to Settings > Magic Post Thumbnail
3. Configure your settings, which post type you want to enable it and the image bank.
4. Go into a post or create one, choose “Plugin enabled for this post” on the sidebar. Update/Create the post and your thumbnail is generated as featured image !
5. You can also mass generate thumbnails for posts. Go into the list of your posts, choose posts or taxonomy you want to get thumbnails, and into “Bulk Actions” choose “Generate featured images”

If you want to use the Google Image API method : From now on to use the Google Images API, it’s required to provide your own Google Search engine ID and API Key. Follow these steps :

• Go to the Google API Console > Credentials > Create credentials > API key, copy your new key into the plugin preferences ( Google API Key field ). Then go to Library > Custom Search API > Enable.
• Go to Custom Search page . Create a new search engine. Then edit the search engine and get the search engine ID. Copy/paste it into the plugin preferences ( Custom Search Engine ID field ).
• Enjoy !

The “How to do” for APIs activations is available here .