$ apt-cache show nautilus
Package: nautilus
Version: 3.38.2-1
[...trimmed...]
Depends: bubblewrap, desktop-file-utils (>= 0.7), gsettings-desktop-schemas (>= 3.8.0), gvfs (>= 1.3.2), libglib2.0-data, libnautilus-extension1a (= 3.38.2-1), nautilus-data (= 3.38.2-1), shared-mime-info (>= 0.50), tracker, tracker-miner-fs, tracker-extract, libatk1.0-0 (>= 1.32.0), libc6 (>= 2.29), libcairo-gobject2 (>= 1.10.0), libcairo2 (>= 1.14.0), libgdk-pixbuf-2.0-0 (>= 2.25.2), libgexiv2-2 (>= 0.10.0), libglib2.0-0 (>= 2.62), libgnome-autoar-0-0 (>= 0.2.1), libgnome-desktop-3-19 (>= 3.17.92), libgstreamer-plugins-base1.0-0 (>= 1.0.0), libgstreamer1.0-0 (>= 1.0.0), libgtk-3-0 (>= 3.22.27), libpango-1.0-0 (>= 1.44.6), libpangocairo-1.0-0 (>= 1.42), libselinux1 (>= 3.1~), libtracker-sparql-2.0-0 (>= 1.12.0)
Breaks: totem (<< 3.31.91-1)
Homepage: https://wiki.gnome.org/action/show/Apps/Nautilus
Recommends: gnome-sushi, gvfs-backends, libgdk-pixbuf2.0-bin, librsvg2-common
[...trimmed...]

The nautilus package (in Ceres anyway) recommends libgdk-pixbuf2.0-bin. Of course it makes sense that a graphical file manager would also provide the thumbnail feature, but it's not a strictly required function of such a tool.

03:17 PM ~$ apt-cache policy nautilus
nautilus:
  Installed: 3.38.2-1
  Candidate: 3.38.2-1
  Version table:
 *** 3.38.2-1 500
        500 http://deb.devuan.org/merged chimaera/main amd64 Packages
        100 /var/lib/dpkg/status

I was having difficulty generating thumbnails on this FM. After some reading on the Internet noticed that a package for generating thumbnails was missing when i did the installation. The package libgdk-pixbuf2.0-bin Fix this concern.

I think this package is essential to generate Thumbnails. Maintainer should set it part of nautilus installation. Thank you!

https://pkginfo.devuan.org/cgi-bin/poli … buf2.0-bin
https://packages.debian.org/search?sear … buf2.0-bin

I hope this topic comes to helps.

Best Regards!