This is a ongoing compilation of sources and programs to get as many file types to show their thumbnails in explorer
https://web.archive.org/web/20091206022122/https://www.winmatrix.com/forums/index.php?/topic/19751-get-thumbnails-of-more-file-types-text-document-and-3rd-party-file/
http://www.vector.co.jp/download/file/win95/util/fh151224.html
\Not working with Win11 yet.
https://web.archive.org/web/20051023130952/http://xentient.com/products/labels/
https://www.cherubicsoft.com/projects/ebook/
https://web.archive.org/web/20051023130952/http://xentient.com/products/labels/
https://www.xyplorer.com/xyfc/viewtopic.php?t=10091&sid=f93ec2f70ec32538398eb8e47d67b29c
https://www.softpedia.com/get/Multimedia/Graphic/Graphic-Others/ImageXtender.shtml