@item And wonderful @url{http://jpegxl.info/, JPEG XL} image format is
not supported by most browsers. Even pretty old
@url{https://developers.google.com/speed/webp, WebP} is not supported
-everywhere.
+everywhere. @url{https://aomediacodec.github.io/av1-avif/, AVIF} would
+be useful too.
@end itemize
@item WebP images, if it is not Xombrero, is transcoded to PNG.
-@item JPEG XL images are transparently transcoded to PNG too.
+@item JPEG XL and AVIF images are transparently transcoded to PNG too.
@item Default Go's checks are applied to all certificates. If they pass,
then certificate chain is saved on the disk. Future connections are