User blog comment:DaNASCAT/Technical Update: June 15, 2016/@comment-24473195-20160616200617/@comment-24473195-20160617142349

"For search, I'll bring up the thumbnails suggestion with the team - we do use image representations of pages in a bunch of places already (e.g. on category pages)."

Thanks. I'd say that choosing images is a bit tricky because the images in category pages aren't always representative of an article's subject. This too happens in wikipedia, partly because of the same problem, and partly because they likely block non-free images, which means that the algorithm chooses some random alternative or in some cases doesn't display anything.

At least on pages with portable infoboxes this is easier to overcome by choosing the main image. But on all other images, it would be nice to specify a "representative image" preferably using some GUI interface, and not parser functions as they would increase the maintenance.