Add transparency on PNGs that have transparency

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MWI
Posts: 7
Joined: Thu Dec 12, 2019 10:36 am

Add transparency on PNGs that have transparency

Post by MWI » Mon Feb 17, 2020 5:03 am

Hi guys
Back again with a strange question.
Is there a way way to ad transparency areas on a PNG that already have transparancy?

I will try to explain my question.
I have PNGs with a product on a transparent background and want to replace part of the product with the water stamp command.
The new part has another shape than the original one.
Is it possible to first cut out the original part and replace it with transparency and then water stamp in the new part?

I have tried for hours but always get problem with the transparency. Have tried to convert the PNGs to 32 bit with no change in result.
As there is thousand of pictures I want to modify I need to to it in a batch process:(


M

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xnview
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Re: Add transparency on PNGs that have transparency

Post by xnview » Tue Feb 18, 2020 9:12 am

rectangle cut?
Pierre.

MWI
Posts: 7
Joined: Thu Dec 12, 2019 10:36 am

Re: Add transparency on PNGs that have transparency

Post by MWI » Thu Feb 20, 2020 5:01 pm

Hmm, can't figure it out.
Maybe this pic explains what I'm looking for.
Is there a solution to cut out a piece from a PNG and replace it with transparency background?

BR
M
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Skärmavbild 2020-02-20 kl. 17.58.36.png

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xnview
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Re: Add transparency on PNGs that have transparency

Post by xnview » Tue Feb 25, 2020 10:02 am

like that, no sorry
Pierre.

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