Facebook Link Post
To change your Facebook Link post's thumbnail, headline, and description, ensure to have your URL link domain successfully verified in your Business Manager first. đĄ
The Upload button appears when hovering over the post image.
Should the domain remain unverified, the Upload button will be inaccessible upon hovering over the image.
How to Verify the Domain?
Thumbnail Image Requirements
8 MB max.
Use images of at least 1200 x 630 px for the best display on high-resolution devices. At the minimum, you should use images that are 600 x 315 px to display link page posts with larger images.
1.9:1 Aspect Ratio (recommended) â If you upload a picture with a different ratio, Facebook will crop the picture to the required 1.9:1 ratio.
You can find the Link post templates in our Image Editor, where you can double-check the size. đ
LinkedIn Link Post
When creating a link post on LinkedIn, you have the option to customize both the title and the preview thumbnail.
To change the title, simply click within the title area, and it will turn yellow, signaling that you are in editing mode.
For changing the thumbnail, click on the Upload button, and choose an image from your computer.
Set a custom link preview with Claude or ChatGPT (ZoomSphere MCP) đ¤
With ZoomSphere MCP, your AI assistant (Claude, ChatGPT or another MCP client) can set a custom link preview on your link posts when it creates or edits a post â the same way you would in the Scheduler. The same rules described in this article apply, so changing a Facebook link preview still requires your URL domain to be verified in Business Manager.
Example prompt:
"Create a Facebook link post with our pricing page URL for Thursday at 10:00, set the preview headline to 'Plans for every team' and use this image as the thumbnail."