OOTB page properties dialog has thumbnail tab which allow to select an asset from DAM or upload from file system.
I tried to have a custom tab with another thumbnail. I can drag and drop different assets on ootb thumbnail and custom thumbnail but when I save the page properties and open again both thumbnails having same asset.
How can I have different thumbnails at page properties level? for example one thumbnail for desktop and another thumbnail for mobile.
I also tried using commerce asset picker but no luck.
With pathbrowser it is working but I was trying to use the assetpicker twice (1 - desktop, 1 - mobile). Looks like the assetpicker and thumbnail preview are tightly coupled (hardcoded in JSP and JS files) with node name 'image' under jcr:content.