automatic :
will automatically detect the name of the .png file to convert to DDS with the correct file format
available name for automatic conversion :
Manual :
select the desired file format for all PNG file inside the folder
Example :
Automatic
Manual
Mipmaps
can range from 0 to 11
If you don't know how to use this, keep 6 as default like most texture in game.
Mipmaps 0
Mipmaps 6
Create YTD
Allow you to create one YTD file for each PNG or one YTD for all PNG file that going to be converted
The DDS file look darker than the PNG file, why ?
Even if it looks dark, it's normal cause this is how it is displayed
if you convert back from DDS to PNG, all color will be the same as the original PNG file.
Also, don't trust the Windows explorer preview
my PNG before conversion :
DDS after conversion :
DDS to PNG :
But if I open one of the dark image, like test_c.png, it's totally fine
So for the answer, don't worry about it, it will be correct in game.