You can add Facebook's Open Graph protocol meta tags to designate the thumbnail for your page. In addition to setting an icon image, these tags can specify even more information about your page such as post title and a description. The list below includes all of the accepted meta tags.

In Luminate: Add any of the tags below to your page or PageWrapper's <head> element to designate the information being passed to Facebook.  These can also be set in the Page Attributes when editing your page. For more information

In Blackbaud NetCommunity: place an Unformatted Text part on the template (not the page) and set it to apply to the <head>, and add the following codes to the part exactly as shown.

Add the following codes:

<meta property="og:image" content="url to image" />
The thumbnail image or "icon" for your page. If you choose not to set an icon manually, Facebook will choose an image to use as the default thumbnail for you.
 
<meta property="og:title" content="title of the page" />
The title for the post. If you choose not to add this property, Facebook will populate the page title with the title of your page.
 
<meta property="og:description" content="add a short description of the page or content"/>
A short description of your page content. If you choose not to add this property, Facebook will select a section of your page for you automatically.

To verify how your site will show up on Facebook, go to https://developers.facebook.com/tools/debug/og/object/ and input your URL.

NOTE: Facebook disallows qualifiers (such as tsize and dm) to render images.  You must use the codes exactly as shown above.  Facebook also requires images to be at least 200x200 pixels in size.  Make sure your images are this resolution or larger.  We provide links to third-party websites in an effort to help you resolve your issue. We are not responsible for the information on third-party websites, and we cannot assist in implementing the solution on these websites.