ConvertImage with ImageMagic for Windows

@echo off
 
set imageSmall=%~dp1%~n1_klein.jpg
set imageBig=%~dp1%~n1_gross.jpg
set quality=-quality 80
 
rem small
convert.exe -resize "150x100" %quality% %1 "%imageSmall%"
 
rem big
convert.exe -resize "1000x500>" %quality% %1 "%imageBig%"