Which image-viewers in linux support the `webp` image format?

Here are the Linux image-viewers, that display webp images:

• Chrome, Firefox^{65+ |ESR ~68.0} & all major browsers
• eog, with webp-pixbuf-loader
• feh, with imlib2-webp (unconfirmed)
• GIMP ^{ver 2.10}
• GraphicsMagick
• gThumb ^{from trusty-release or above ~3.4.3}
• Gwenview //from KDE
• ImageMagick
• nomacs
• PhotoQt
• qview
• Thunar // in old system, update mime-info
• vwebp -part of libwebp
• XnViewMP

and others from wiki

In 16.04

display 'vid:*.webp'

Since 16.04 imagemagick does support webp, although it apparently delegates decoding to webp, so webp is needed:

sudo apt-get install webp

If you are looking for GUI applications, consider GIMP or ImageMagick.

If you have installed the webp package, you could use vwebp file.webp to view the image, and dwebp file.webp -o file.png to convert it to a png file.

See https://developers.google.com/speed/webp/docs/using for details.