Rejected Photoshop psd transparency.

[Noyb]

IV 4.5 (64) … W7
I’d like to see a Photoshop psd file (saved with transparent layers) shown with transparency (windows viewing color) and be able to Batch process them as a png with transparency.
I’d like to be able to remove, and not have to use Xnview for batch processing

[Bhikkhu Pesala]

It is unlikely to be implemented unless there is a fundamental change to the format that IrfanView uses. Load any 32-bit image and look at the Image Information dialogue. The opened image is only 24-bit, while the one on disk is 32-bit.

See this earlier thread, for example.