Concrete5 ad-on block for '.webp' image files with fallback to a '.jpg' for browsers that do not support the '.webp' image extension. Only Apple Safari and iOS fails to support??
Purchase from the Concrete5 marketplace: Webp Image Block
More info about the new 'Google' web image format: Google Development
File size approx. 16KB
Normal Image block, jpg file size approx. 30KB.