Does WebP images are useful?
Strange thing, but WebP do not give any score/speed boost.
More likely there is some error in latest PageSpeed and it shows a hint that WebP will help you much - but that is not really true. If your server has WebP support, you can check this with Lightning by your own.
Also Apple devices do not support WebP at all. That's why we need to keep 2 image sets - regular PNG/JPG and WebP, that is quite costy.
To be honest, WebP support was added to Lightning because we got tired of people asking about it. There is no need to enable WebP until you are totally mad about it.
Nice to hear that!This info will be shown more often to another people.
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