Legacy ImageMagick Discussions Archive

Thanks for the help. I think I'll just do a -format "%A\n" and check for "Blend" or "True" (to support IMv6).

Thanks for the suggestion. One issue with "channels" is that it can return many different values. For example, I tried it on a collection of 30k images and here's all the different values I got: cmyk, gray, graya, srgb, srgba. So in order to determine if the image has an alpha channel, I would have ...

In IMv6, I could do something like: identify -format '%A' *.png and it would give me True/False depending on whether the image has an alpha channel or not. But this doesn't seem to work with IMv7; instead it gives me "Blend" or "Undefined". Is there some way I can use to retrieve that information ...