mankutila

.visually-hidden {
  position: absolute; 
  overflow: hidden; 
  clip: rect(0 0 0 0); 
  height: 1px; width: 1px; 
  margin: -1px; padding: 0; border: 0; 
}

mankutila

FOR %a IN (*.png) DO convert "%a" -strip -depth 24 -define png:compression-filter=2 \ -define png:compression-level=9 -define png:compression-strategy=1 "opt\%a"

FOR %a IN (*.jpg) DO convert "%a" -sampling-factor 4:2:0 -strip -quality 85 -interlace JPEG -colorspace sRGB "opt\%a"