Using Full Size Rich Link Images Instead of Thumbnails
Rich Links default to using thumbnails, but can be configured to use full size images.
To achieve a high-definition look and feel for your Rich Links, you may want to opt for using the full size image for display. For example, if you are using a marquee or extra large rich link, it may be best to use the best resolution image, as opposed to the default thumbnail resolution. This guide describes how to override the default.
Add your links to a block
You can add them in a bullet list or use a macro to return a set of link results.
Use the Theme Press Designer to enable the block for Rich Links
In the Page tab, locate and expand the block, click to expand "Rich Links", and then check to "Enable Rich Links".
In the Designer, check to "Use Full-Size Images"
In the "Rich Links" options for this block, check "Use Full-Size Images".