Rajin Sharwar

OnHover Link Preview plugin automatically adds link preview pop-ups so visitors can see the preview of the hyperlink without leaving your website, and just hovering over the link.
Whether users are reading your blog or webpage, they can get a preview of the linked content and get a peak of the preview of the webpage refered.
<ul>
<li>Link auto-previews popups work on all types of hyperlinks, under the “entry-content” div class.</li>
<li>Excludes the header, footer, nav-menu links etc.</li>
<li>Excludes any Images with a link ( tag).</li>
<li>No code easy one-click installation.</li>
<li>Easily specify which Elements, Classes, or IDs of the website to exclude from showing auto-previews.</li>
</ul>
This plugin uses “mShots” as a third party service to get the previews. mshots is a Website Thumbnail/Snapshot Service from Automattic licenced GPL-2.0. No data of your’s or your website, is being sent or shared with mShots. You can find it’s licence and policy details from the below URL: 
https://github.com/Automattic/mShots/blob/master/LICENSE

OnHover Link Preview

OnHover Link Preview plugin automatically adds link preview pop-ups so visitors can see the preview of the hyperlink without leaving your website, and …

dugubenyu

Page2Images Plugin allows user to create a website thumbnail preview in the content of posts using a tag [p2i]http://www.yourwebsite.com[/p2i] format. It can save a lot of time to take the screenshot of one page and parse it in the wordpress.
The plugin requires a free or paid account from <a href="http://www.page2images.com" rel="nofollow ugc">Page2Images</a> who is the service provider. No purchase is required to use the plugin or the free service.
Core features:
<ul>
<li>Insert URL and get thumbnail preview in one second</li>
<li>Customize the size of the preview easily</li>
<li>Support different preview device included iOS phone, Android phone and tablet.</li>
</ul>
If you need know more information, here is our website thumbnail <a href="http://www.page2images.com/website_thumbnail_api_document" rel="nofollow ugc">API document</a>.

Page2Images Website Thumbnail

Create a website thumbnail preview using the Page2Images API.

OnHover Link Preview vs Page2Images Website Thumbnail