Image Upload, Process, and Optimisation

Watermark width percentage related to source image

Watermark opacity / alpha channel

Threshold, 1 - 100

quality, 1-100

use progressive (interlace) scan

Set to '4:4:4' to prevent chroma subsampling otherwise defaults to '4:2:0'

Optimise Huffman coding tables

use mozjpeg defaults, equivalent to trellisQuantisation + overshootDeringing + optimiseScans + quantisationTable: 3

apply trellis quantisation

apply overshoot deringing

optimise progressive scans, forces progressive

quantization table to use, integer 0-8

force JPEG output, otherwise attempt to use input format

quality, 1-100

Alpha quality, 1-100

use lossless compression mode

use near_lossless compression mode

use high quality chroma subsampling

named preset for preprocessing/filtering

Effort

force WebP output, otherwise attempt to use input format