Computermalfunction 57

Another reason pngcrush considers PNG files to not really be PNG files is if you accidentally export them with layers intact. If you inspect the file in Finder, look around the More Info area (Dimensions, Color Space, etc.) for an item called “Layers”

It might say something like:

Layer 68, Title Banner, Group 26

This happens when designers sometimes Save As PNG instead of exporting for web/mobile. And it completely destroys libpng (and thus pngcrush).

The fix is to properly export the PNG, or open the PNG yourself and re-export it as a “flat” PNG.

2 thoughts on “Computermalfunction 57”

  1. Thank you for visiting and ‘Following’ my Blog. I have signed on to follow your Blog. I am finishing up a 2-year visual arts project that’s posted every Monday evening. When finished (mid-November) I will be posting the makings of a book comprised of stories (vignettes) and art. Hope you are able to join this journey. Thanks again for the ‘Follow’.

    Liked by 1 person

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