Babar

Take a snapshot of a website and embed it on your blog post on the fly. No need any screen capture tools, no need any coding. 
Just insert the shortcode, and snapshot will be embed automatically on your post.
Here is an example: <code>[snap url=http://example.com alt="This snapshot has taken by Snap A Site"]</code>
For more details reffer to the User Manual part of the readme.txt file or find <a href="http://en.ibabar.com/snap-a-site#manual" title="Find the user manual of Snap A Site on my blog" rel="follow nofollow ugc">Snap A Site user manual</a>
Still searcing for something? Just drop a message @ <a href="http://en.ibabar.com" title="Use the contact form on my blog" rel="follow nofollow ugc">My Blog</a>
<h3>User Manual</h3>
It’s easy. Just insert this shortcode in your post: [snap url=http://example.com]
Supported parameters for [snap]
<ul>
<li>url – URL of the site to take snapshot</li>
<li>alt – For image alt</li>
<li>h – For imahe height</li>
<li>w – For image width</li>
<li>alt – For image alt</li>
<li>h – For imahe height</li>
<li>w – For image width</li>
<li>title -For link title</li>
<li>target – For link target</li>
<li>rel – For link rel</li>
<li>link – For linking to other site</li>
</ul>
Have further question? Let me know. Just drop a message @ <a href="http://en.ibabar.com" title="Use the contact form on my blog" rel="follow nofollow ugc">My Blog</a>

Snap A Site

The easiest way to take and embed snapshot of a site on Wordpress blog.

sam2kb

This plugin allows any user to add previews of websites right in the content of their posts using a simple [thumb]http://domain.com[/thumb] format. Users may also “optionally” turn on mouseover previews. No purchase or registration is required to use the plugin. Optional upgrade enables PRO features such as “Full-length Captures”, “Free Width Captures” and “Refresh on Demand”.
<ol>
<li>Easily embed website previews in posts</li>
<li>Flexible caching system allows you to store retrieved screenshots on your server</li>
<li>[opt] Display custom images for queued or error thumbshots</li>
<li>[opt] Display thumbshot URLs in a safe manner without linking them directly to the target website</li>
<li>[opt] Display mouseover header preview over thumbshots</li>
<li>[opt] Display mouseover pop-up preview over external links in your posts</li>
<li>[opt] Utilize several Thumbshots.RU PRO features</li>
</ol>
Take a look at Thumbshots.RU for more information (http://www.thumbshots.ru/en/ “Website screenshots provider”).

Thumbshots plugin

This plugin uses the Thumbshots.RU API to replace special tags in posts with website screenshots. Note: This plugin is no longer maintained.

Snap A Site vs Thumbshots plugin