OBSERVED RESULT When a directory contains two to four images, all of them are shown in the thumbnail. When it contains more than four image, some four of them are shown. By "images" I don't mean only images, but also other kinds of files with previews, like Blender models or text documents, etc. EXPECTED RESULT I wish that only the "main" image appeared in the thumbnail if it is present. It is a custom that such a file should be named `folder.jpg` or `cover.jpg`, but I would also add support for PNG variants. SOFTWARE/OS VERSIONS KDE Plasma Version: 6.3.5 KDE Frameworks Version: 6.14 Qt Version: 6.9.1 ADDITIONAL INFORMATION This feature was asked about by someone else a few years ago on Reddit, a possible way to implement this was discussed in the comments: https://www.reddit.com/r/kde/comments/ng5k17/is_there_a_way_to_automatically_show_folderjpg_or/