I'm not (only) talking about the general population, but major sites. As a quick sanity check, the following sites are serving images with the `image/jpeg` cont

I'm not (only) talking about the general population, but major sites. As a quick sanity check, the following sites are serving images with the `image/jpeg` content type: * CNN (cnn.com): News-related photos on their front page * Reddit (www.reddit.com): User-provided images uploaded to their internal image hosting * Amazon (amazon.com): Product categories on the front page (product images are in WebP) I wouldn't expect to see a lot of WebP on personal homepages or old-style forums, but if bandwidth costs were a meaningful budget line item then I would expect to see ~100% adoption of WebP or AVIF for any image that gets recompressed by a publishing pipeline.