print 8bit png transparency as white

[dee]

Hello,

I have a set of 8bit png images with transparency. How can I print them with transparent parts white?

I tried following:

"File/Print" shows preview with transparent pixels black.
"Create/Contact sheet" renders transparent pixels black.
"Create/Strip of images" renders transparent pixels black.
"Tools/Batch processing" ... I can't find how to change transparent to white.

Stepan

[dee]

test image

[dee]

"nconvert.exe -transpcolor 255 255 255 card01.png" ... seems to do nothing, transparent color is still black

[dee]

i guess do everything wrong today...I tried downloading image magick but

"convert.exe -transparent-color white card01.png card01_1.png"

also seems to do nothing, transparency still black

[dee]

ok, i have it

"convert.exe -background white -alpha background card01.png card01_1.png"

makes transparent color white

[XnTriq]

Please follow these steps (in XnView Classic's view mode), Stepan:

1. Edit » Background colour... » Red: 255 / Green: 255 / Blue: 255
2. Image » 32 bits
3. Image » True Colour

[dee]

Thanks, it works.

BTW is it possible to do the same in Batch processing? I see transformation "Convert to True Colours" but no "Convert to 32bits".

[XnTriq]

BTW is it possible to do the same in Batch processing? I see transformation "Convert to True Colours" but no "Convert to 32bits".

I tried…

• Tools » Batch Processing... » Transformations
  • Image » Add alpha » Parameters: [ 255 ]
  • Convert » Convert to True Colours

… but the background turned out black.