Viewing and generating thumbnails for RAW photos in GNOME
For Gnome 49
To View
Use gThumb instead of Loupe. Install:
sudo pacman -Syu gthumb
To generate thumbnails
Install raw-thumbnailer from AUR.
Before Gnome 49
To View
Use Eye of GNOME or Eye of MATE instead of Loupe. Install:
sudo pacman -Syu eog
To generate thumbnails
Create ~/.local/share/thumbnailers/ if it does not exist:
mkdir -p ~/.local/share/thumbnailers/
Copy /usr/share/thumbnailers/gdk-pixbuf-thumbnailer.thumbnailer to ~/.local/share/thumbnailers/:
cp /usr/share/thumbnailers/gdk-pixbuf-thumbnailer.thumbnailer ~/.local/share/thumbnailers/
Add the following MIME types to the end, then save and exit. Note that not all MIME types have been verified:
image/x-xpixmap;image/x-3fr;image/x-adobe-dng;image/x-arw;image/x-bay;image/x-canon-cr2;image/x-canon-crw;image/x-cap;image/x-cr2;image/x-crw;image/x-dcr;image/x-dcraw;image/x-dcs;image/x-dng;image/x-drf;image/x-eip;image/x-erf;image/x-fff;image/x-fuji-raf;image/x-iiq;image/x-k25;image/x-kdc;image/x-mef;image/x-minolta-mrw;image/x-mos;image/x-mrw;image/x-nef;image/x-nikon-nef;image/x-nrw;image/x-olympus-orf;image/x-orf;image/x-panasonic-raw;image/x-pef;image/x-pentax-pef;image/x-ptx;image/x-pxn;image/x-r3d;image/x-raf;image/x-raw;image/x-rw2;image/x-rwl;image/x-rwz;image/x-sigma-x3f;image/x-sony-arw;image/x-sony-sr2;image/x-sony-srf;image/x-sr2;image/x-srf;image/x-x3f;
(WIP) troubleshoot
If the steps above doesn’t work, try installing libopenraw:
sudo pacman -Syu libopenraw
However, eog seem to have issues rendering the RAW images with libopenraw installed.
References
https://discuss.pixls.us/t/cr2-and-dng-thumbnails-in-nautilus/10350/5
https://discourse.gnome.org/t/gnome-raw-thumbnailer-really-isnt-doing-its-job/6073/4
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