pamac install gnome-font-viewer
pacman -S gnome-font-viewer
pamac remove gnome-font-viewer
pacman -R gnome-font-viewer
GNOME Fonts shows you the fonts installed on your computer for your use as thumbnails. Selecting any thumbnails shows the full view of how the font would look under various sizes. GNOME Fonts also supports installing new font files downloaded in the .ttf and other formats. Fonts may be installed only for your use or made available to all users on the computer.