Image Magick resize and manipulate files on Windows

ImageMagick.Watermark.bat

REM add watermark to all JPG images in the same folder
REM resize all JPG images in the same folder
REM put the result in different folder
SET IMAGE_MAGICK="C:\Program Files\ImageMagick-7.0.10-Q16\magick.exe"
SET SIZE=700x700

mkdir watermark
mkdir resize

for /F "usebackq delims=" %%i in (`dir /a:-d /b %foldername%\*.jpg`) do %IMAGE_MAGICK% %%i ( watermark.png  ) -gravity center -composite watermark\%%i

for /F "usebackq delims=" %%i in (`dir /a:-d /b %foldername%\*.jpg`) do %IMAGE_MAGICK% %%i -resize "%SIZE%\>"  resize\%%i

rem %IMAGE_MAGICK% lab.jpg ( watermark.png  ) -gravity center -composite ouput.jpg
rem %IMAGE_MAGICK% lab.jpg -resize "%SIZE%\>"  ouput_pab.jpg