Tried compressing the minified jQuery, got: 32653 gzip -9 31763 7z -tgzip -si -mx=9 -mfb=258 -mpass=16 31691 zopfli -i1000 IOW, it yields a much smaller

Tried compressing the minified jQuery, got: 32653 gzip -9 31763 7z -tgzip -si -mx=9 -mfb=258 -mpass=16 31691 zopfli -i1000 IOW, it yields a much smaller benefit as data gets harder to compress. Of course this is not at all surprising.