/usr/lib/x86_64-linux-gnu/imlib2/loaders/ is in libimlib2-dev 1.4.7-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/imlib2/loaders/argb.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/bmp.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/bz2.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/gif.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/id3.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/jpeg.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/lbm.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/png.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/pnm.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/tga.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/tiff.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/xpm.la
/usr/lib/x86_64-linux-gnu/imlib2/loaders/zlib.la