format=png|gif|jpeg|webp
determines the format to encode the image as. Defaults to the original format.
jpeg.quality=0..100
determines the jpeg encoding quality. Default is 90
jpeg.progressive=true
enables progressive jpeg encoding.
jpeg.turbo=true
encodes files faster at the expense of file size.
webp.quality=0..100
determines the webp encoding quality.
webp.lossless=true
enables lossless webp encoding. Default false
png.lossless=false
disables lossless PNG encoding. Default true
unless png.quality
is specified.
png.quality=0..100
determines lossy png quality. Default 100
.
png.min_quality=0..100
determines the minimum png quality that must be realized before lossless is used. Default 0