XnView Software

Checked Edit colormap option but quite didn't understand how transparency marking on white colors work there, still same result.
But what I wished if such would be automatical, so multi file editing like CTRL+U. (With saving transparency ofcourse)

Wishing to save transparency, not converting it to white color.
Made a video:
https://youtu.be/v157P96Dxpk

So would be nice when changed ex. to 256 colors it will be still transparent.
Please!
Thank you!

Need to save it to as TGA, but reduced colors.
Image -> Change color depth -> (Apply Image ticked/marked) Colors (any).
You will notice that transparenty replaced to white color. Need to say that only TGA 32bit supports transparenty.
What I suggest is to keep transparenty.
Thank you!

The more I know (photoshop plugins in xnview) !
Indeed the plugin does the work, but if possible at free time, please, make it as in xnview mp too.
Thank you!

XnView MP Windows
Version 1.3.1 64bits (Oct 11 2022)

At the moment XNView MP can reduce colors of TGA but taking off transparency by replacing to white color and saving to 32bit.
Can we please have an option to save transparency while changing color depth? So should save 32bit but with transparency ...

Pity that op didn't provide any ttf file since still this bug exist at current latest version 1.0 64bits (Apr 28 2022).
Attached the crashing fonts examples. Put to some empty folder, while exploring with XnViewMP it may crash even before reaching the folder, since it parsing fonts.
Two reasons why ...