
Landing pages allow for the SEO settings to be changed - including items like the meta-image and text. This allows for the User to control what other programs, like Google and Facebook, automatically pull in when posted or used in those places.
After selecting the web template you'd like to control, click on Settings when viewing the web editor
Click on Meta information
Update the page title, description, header and other SEO details:

To change the image that appears when a landing page is published, or posted, to a website such as Facebook, or LinkedIn, put in the image source URL under the Image box.
Click Save under Page Information
And click Close, then Save & Close to save your overall changes