Find jpg/png that are black/white and color

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AerialAtom
Posts: 1
Joined: Tue Aug 17, 2021 11:37 am

Find jpg/png that are black/white and color

Post by AerialAtom »

So I want to do 3 things:
find jpgs that are grayscale to convert them to png grayscale.
find pngs that are in color and convert them to jpg.
find black/white pngs that are in rgb mode and convert them to grayscale png.

So far I've been able to slowly accomplish the first two manually but since I'm processing around 30k images it takes a long time.

I saw that the ExifTool list the Png's Color type as either RGB or Grayscale. Would it be possible to sort by those settings?
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xnview
Author of XnView
Posts: 36791
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: Find jpg/png that are black/white and color

Post by xnview »

currently color information is not displayed and can't be sorted
Pierre.