Legacy ImageMagick Discussions Archive

Your best bet is to use some scripting solution...
IM Examples, Basics, Mogrify, Batch Processing Alternatives
http://www.imagemagick.org/Usage/basics/#mogrify_not

I can't seem to find a way to do this in a DOS script.
for %%a in ("*--large.png") do convert %%a -transparent none -resize 50 ...

I was wondering of there was a way to create a truncated output of converted files using mogrify?
ie:
/
image001--large.png
image002--large.png
image003--large.png

mogrify -transparent none -resize 50% -define png:format=png32 *--large.png
This code only reduces and overwrites the *--large.png ...

Thanks glennrp!

Removing the word "call" worked! Thanks Pete!

Thanks gleenrp,
It creates the correct image properties but now I need a way to truncate the name on output.
mogrify -transparent none -resize 50% -format PNG32 pngalpha--large.png
file result: pngalpha--large.PNG32

Is there a way to change the extension back to lowercase .png (not .PNG32) and ...

In a DOS shell typing this will work:
However placing the same line in a "resize.bat" file when executing corrupts the resize command and changes it into pixels instead of a %?
Is there a workaround for this?

Hi Pete,
Somehow DOS changes the argument when adding the double %% for the percent argument for convert command and just fails?

version: ImageMagick-6.7.5-7-Q16-windows-dll.exe

Can anyone help me out with this DOS script

---
@echo off
for %%a in ("*.png") do call convert %%a -transparent none -resize 50% PNG32:%%a
---

I get error: @error/covert.c/ConvertImageCommand/2353
because the 50% resize argument has a "%" in it ...

version: ImageMagick-6.7.5-7-Q16-windows-dll.exe

Small PNG 32bit images that only have greyscale colors with full 8bit alpha will not convert without loosing the alpha layer when using mogrify while convert still works.

"convert pngalpha.png -transparent none -resize 50% PNG32:pngalpha.png ...