A variant of the given script
  GDEL zz%%4.ps
  Gdvips -T 14in,14in -Ppdf -mode epstypro -D 360 -f %%1 -pp %%2 > zz%%4.ps
  GDEL %%3
  Gc:/imagemagic/convert -crop 0x0 -density 110x110 -transparent #FFFFFF zz%%4.ps %%3
A Netpbm-based script (src / binaries for Win 95/98/NT: Netpbm project, MiKTeX)
  Gif exist zz%%4.ps DEL zz%%4.ps
  Gif exist zz%%4.ppm DEL zz%%4.ppm
  Gdvips -T 14in,14in -Ppdf -f %%1 -pp %%2 -o zz%%4.ps
  Ggswin32c -sDEVICE=ppm -sOutputFile=zz%%4.ppm -q -dbatch -dNOPAUSE zz%%4.ps -c quit
  Gmove zz%%4.ppm yz%%4.ppm
  Gpnmcrop yz%%4.ppm > zz%%4.ppm
  Gif exist %%3 DEL %%3
  Gppmtogif -interlace -transparent 1,1,1 zz%%4.ppm > %%3
IrfanView
  IrfanView offers a possible alternative for the ‘convert’ utility of ImageMagick.
PDF-based script
  A (ps2pdf)
  Gdvips -mode ibmvga -D 110 -f %%1 -pp %%2 > tex4ht.ps
  Gps2pdf tex4ht.ps tex4ht.pdf
  Gconvert -crop 0x0 -density 110x110 -transparent '#FFFFFF' tex4ht.pdf %%3