transparent png out of jpg - How to do?

Ask for help and post your question on how to use XnView Classic.

Moderators: XnTriq, xnview

Harald@XnView
Posts: 4
Joined: Tue Apr 09, 2013 6:34 am

transparent png out of jpg - How to do?

Post by Harald@XnView »

Hello together,

I get jpg files or png files from a CAD-program. I want to give them a transparent background instead of the white one. The pictures have 24 bit.
I want, by use of a batch run with XnView Classic or MP, give the new created png a transparent background so that they can be integrated into a operating panel of machines.
Using GIMP i have to change the 24 bit colour into indicated colours, 8 bit. I have to give the picture an alpha canal. I have to select the white color and to delete it.
Is it possible to do this work by XnView e.g. with batch processing (Ctrl+U)?

Thank you
Harald Zimmermann
User avatar
xnview
Author of XnView
Posts: 37624
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: transparent png out of jpg - How to do?

Post by xnview »

if you want to create 8bits+alpha channel, it's not possible with XnView. For 32bits, it's a basic conversion, you can't select a color
Pierre.