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...

Link

使用短代码 <code>[wp-openlink]</code> 将链接输出到一个页面，带网站缩略图（备注字段）和点击数（评分字段），不修改数据库也不需要专门存储图片。
缩略图格式说明：长宽为 100px * 70px，保存格式为 Data URI 编码，读写实时，每张占用数据库大小约为 10k。
<ol>
<li>可配置缩略图接口</li>
<li>可自定义链接样式</li>
</ol>
More information: <a href="https://www.xiaomac.com/open-link.html" rel="nofollow ugc">www.xiaomac.com</a>.

Open Link 图链

Use [wp-openlink] to output all your Blogroll in a Page, with website screenshot thumbnail and clicks countable, no database altered or images storage …

WP-Thumbnail vs Open Link 图链