Then I had a flash of inspiration, and I found a really easy solution to my problem. If you have a post with no images, but you want it to have some kind of thumbnail in Facebook, this is what you do:
- Upload the image that you'd like to use as a thumnail to Wordpress
- Insert that thumbnail image into the post you would like to have that thumbnail (position doesn't matter)
- If using the visual editor: Click the Edit Image icon, go to the Advanced Settings tab, and in the Style section add display: none;
- If using the HTML editor: Find the <img> tag for the thumbnail image, and add style="display: none;", or if it already has a style attribute, just add display: none; to that
If done correctly, the image will not appear in the post or even the visual editor, but Facebook will be able to find it and use it to create a thumbnail for the link. The trick is that display: none; property, which hides the image when viewing the post and doesn't create any blank space. Facebook disregards the display property info when it generates the thumbnail, so it can still find the images that aren't displayed. Also this doesn't work with the "visibility" style property, since that will add blank space to your post and alter your layout. Also you can add multiple thumbnails by adding more than one image with the display: none; property. Just keep in mind that Facebook will generate the thumbnails in the order they appear in the post. So if you have a preferred thumbnail, you might want to put it first so people immediately see that one on Facebook.
If you want to try it out, you can experiment by posting these links to Facebook. Notice that the thumbnails created by Facebook don't appear in the posts themselves:
And if you found this tip helpful, please check out the rest our blog, ThereforeYou.com, and share our videos and posts with people. We're a sketch comedy group and video production company called Therefore Productions. We have a fan page on Facebook, too, and we'd love for you to become a fan. Also I created ThereforeYou.com, so comments and tips would be appreciated.