Robo

WP-Thumbnail is a simple and neat WordPress Plugin that not only allows you to use a short-code to generate dynamic 
screenshot of webpages in your posts but also takes a realtime snapshot of the served webpage and saves a link to it 
on the page itself that too without burdening the servers. This helps in optimizing search results on Google by adding 
a thumbnail to the left of the search result snippet and makes shared posts more attractive, with a relevant thumbnails, 
on Social Sites like Facebook.
For more information, check out <a href="http://wp-thumbnail.robocasters.com/" rel="nofollow ugc">wp-thumbnail.robocasters.com</a>.
Features include:
<ul>
<li>Short-Code – The plugin has a shortcode that enables you to add dynamic screenshots of webpages to your post.</li>
<li>Meta Thumbnail – It uses meta name thumbnail and adds the live screenshot in it for being displayed as a thumbnail in Google Searches.</li>
<li>PageMaps – PageMaps is a structured data format that provides Google with information about the data on a page. It enables website creators to embed data and notes in webpages.</li>
<li>Facebook OG:Image – It sets image with content og:image to the top priority for being used as a Facebook Post thumbnail.</li>
<li>WP-Thumbnail Class – It adds a WP-Thumbnail class that helps image to be used for all other sharing purposes.</li>
</ul>

WP-Thumbnail

'Changing the way you share', giving you an experience you have never had before...

Daniele Perilli

Get the most relevant image, or the appropriate embedded media player, or the page screenshot of any external link in your post (similar to what you get when you share a page on Facebook or Google+).
The Super Link Preview plugin supports:
<ul>
<li>shortened links (for example t.co or bit.ly links)</li>
<li>media content (all formats natively supported by WordPress – https://codex.wordpress.org/Embeds)</li>
<li>OpenGraph images</li>
<li>page screenshots</li>
</ul>
If the external link points to a supported media, this plugin embeds the appropriate player in the page (through the WordPress native oEmbed function – https://codex.wordpress.org/Embeds). 
If no supported media is found, the plugin embeds the og:image specified in the page’s metadata. 
If the no og:image is found, the plugin parses the target external link to find the most relevant image, discarding images smaller than specified size and standard ad banner sizes. 
If not a relevant image is found, the plugin takes a screenshot of the linked page (through a WordPress public service located at http://s.wordpress.com/mshots/v1).
You can overrule the workflow and force the plugin to take the linked page’s screenshot with the forceshot dashcode attribute.
<h4>Shortcode Preview</h4>
[link-preview url=”link-to-website” forceshot=”false”]
<h4>Multisite Compatibility</h4>
The Super Link Preview plugin is compatibly with WordPress Multisite, just use the <a href="https://codex.wordpress.org/Create_A_Network#WordPress_Plugins" rel="nofollow ugc">Network Activate</a> feature to enable the shortcode on every site. If you only want to enable the shortcode for a specific site, activate the plugin for that site only.

Super Link Preview

Get the most relevant image, or the appropriate embedded media player, or the page screenshot of any external link in your post (similar to what you g …

WP-Thumbnail vs Super Link Preview