Transform Options

Transform options manipulate an image's size, orientation, and color mode.

This section discusses the following options:

dpi=<-1200 to -25, 0, 25 to 1200>

vflip

hflip

rotate=<angle>

invert

upsample=<factor>

subsample=<factor>

layer=<layer_type>

crop=<x0>,<y0>,<w>x<h>

resize=<w>x<h>

togray

tobitonal=[<1-255>]

black-normalize=<-1, 0-100>

white-normalize=<-1, 0-100>

scale-normalize=<1- >

jpeg