I have Polish enabled to Lossy and Webp selected. From other threads, the conclusion was CF will not convert to Webp if it was not worth doing so, i.e. the conversion does not shrink the image more than the original.
On Google Insights, the biggest problem it shows on my mobile website is “Serve images in next-gen formats” because none of the images were served in Webp.
I will give an example. I have an image that is 208kb and a screen grab from my Insights test
The test suggests the image could be reduced significantly and I tested with an online converter and the image was reduced to just 33kb webp.
Polish is working when I looked at the response header
Cf-Bgj: imgq:85,h2pri Cf-Polished: origSize=238468, status=vary_header_present
What can I do to get webp to work?