Is #WebP really better than #JPEG ? - siipo.la
Is WebP better than JPEG?
So, is WebP better than JPEG? It depends if you are using the reference libjpeg library or the improved MozJPEG encoder.
However, when compared to MozJPEG, WebP only performs better with small 500px images. With other image sizes the compression is equal or worse.
I think MozJPEG is the clear winner here with consistently about 10% better compression than libjpeg.
Since most of the time WebP is used alongside JPEG fallback, by using WebP you will essentially double your storage costs with little benefit.