janrenz

With Usage of the wordpress.com inofficial webpage to screenshot function this plugins generates screenshots of websites. For more information check http://bdisco.de/wordpress-plugins/ 
There are a few options you can use in your shortcode [webscreenshot]:
url: full Url of the webpage which you want to have screenshoted (mandantory)
width: Pixel width of the screenshot (optional, default: 250)
refresh: If you want to reload the screenshot if it wasn’t generated on the first call (optional, default: true)
link: link image to given url (optional, default: true)
newpage: open link in new page (optional, default: true)
title: set link title tag (will be used as img alt tag also) (optional, default:”)
All img-tags generated will have a class called “webscreenshot”, the link will have a class called “webscreenshot-link” which you can you to perform additional style stuff
Feel free to make pull requests at https://github.com/jprberlin/web-screenshots

Web Screenshots

Displays Thumbnails of a given URL usings wordpress.com inofficial API. Use Shortcode [webscreenshot] with url and some  optional params.

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 …

Web Screenshots vs Super Link Preview