[vlasta2]

I agree, that pushing WebP now is too soon as almost no image editors support it. I have added latest WebP codec (that also supports animations) into my RealWorld Paint ( http://www.rw-designer.com/image-editor ) few weeks ago and I doubt anyone else did it since that time. Chrome is really crazy supporting WebP now while it is still immature. Image editors and web server libraries should be the first ones to support WebP, web browsers should be last.

[ZeroGravitas]

The basic jpeg-like functionality has been widely available for a while. And as in this case, high traffic websites (often Google's own) that are already re-processing millions of photos and/or images and Chrome are the obvious first places to get a foothold, long before anyone would think about actually editing a webp by hand in photoshop.