Linux image-viewers that display webp images
Chrome,
Firefox65+ |ESR ~68.0 & all major browsers
feh, with
imlib2-webp (unconfirmed)
GIMP ver 2.10
GraphicsMagickgThumb from trusty-release or above ~3.4.3
ImageMagicknomacsThunar // in old system, update mime-info
vwebp -part of
libwebpPhotoQtXnViewMPGwenview //from KDE
eog, with
webp-pixbuf-loaderMore info on
wiki/WebP#Support--