Transparent background?

[gordonjackson]

Hello,

Can anyone tell me if it is possible to cut a paste a selection from a jpeg for posting into a Powerpoint presentation, keeping the background transparent? That is, when I paste the selection in it has a white background which looks horrible on the blue background of my presentation!

Many thanks,
Gordon

[JendaLinda]

JPEG does not support transparency. You may use PNG for transparent pictures. Transparency support in IrfanView is quite limited. It allows to set a single solid color as transparent.

[gordonjackson]

OK, thanks.

[Bampah]

JPEG does not support transparency. You may use PNG for transparent pictures. Transparency support in IrfanView is quite limited. It allows to set a single solid color as transparent.

I used to be able to set the transparent colour when saving a png but I can't remember how.
Can someone help me out please.

[Bhikkhu Pesala]

I used to be able to set the transparent colour when saving a png but I can't remember how.
Can someone help me out please.

The options are on the Save as PNG dialog. Chose the main window colour, or pick on transparent colour on save.