Legacy ImageMagick Discussions Archive

Reported:

viewtopic.php?f=3&t=16772&start=0

As initially described here:

http://www.imagemagick.org/discourse-server/viewtopic.php?p=61803

there may be a bug in either assigned or reported rendering intent with PNG files using 'mogrify -intent someintent somefile.png' followed by 'identify -verbose somefile.png'.

The error is exhibited by ...

Actually, now that I compare the results of TweakPNG output with 'identify -verbose' output, I see that reported rendering intent is different. For example, TweakPNG is reporting 'Perceptual' after I assign 'Saturation' with mogrify, and 'identify -verbose' reports 'Saturation'. Since ImageMagick is ...

Thanks for the tips, those are good.

OK, so it looks like 'mogrify -intent AnyValidIntent somefile' has the effect of both creating an sRGB chunk and giving it the specified rendering intent.

Amd if 'identify -verbose' reports any value other than 'unknown' for rendering intent, then you have an ...

I'm looking for a way to process PNG images to:
- report which have embedded profiles
- for those without embedded profile, insert an sRGB chunk

I've been doing this with TweakPng and getting good results, but you have to do it by-hand for each file, and that won't scale.
Can I do this with mogrify ...