Win10 Irfan 64 convert image to 32 bit

[samtal]

Hi,
I have several jpg photos (downloaded from my Android phone) that I want to save as 32 bits on my irfan64 app. How can I do it?
thks

[Bhikkhu Pesala]

Why? Is this for an online catalogue to place objects on a page with transparent backgrounds?
You could save as PNG and pick the transparent colour, but the result will likely not be useable.
You need a photo-editing application to cut out the background.

[samtal]

The reason for conversion to 32 bits is for the sake of using the pictures with a 3D conversion application that can not handle 64 bits. Very simple - some older 32 bits applications can not handle 64 bits data.

[JendaLinda]

JPEG is only 24 bpp. Are you sure about the image format?

Irfanview can load 64 bpp images in PNG or TIFF, for example, and output them as 24 bpp.

[Bhikkhu Pesala]

Something lost in translation here. JPG images have 24-bit colour, or 8-bit if grayscale.
I never heard of a 64-bit JPG image.

[j7n]

The "bitness" of an application is unrelated to the bit depth of an image. A 64-bit application can accomplish some tasks faster than a 32-bit one because it has access to additional instructions on the processor, but either can ultimately process all bit depths by working with a sets of smaller numbers if needed. The formats written by 64-bit IrfanView are the same, and all are 24-bit (or 8-bit per channel) because there little need for more in practice.