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How do I keep a PNG background transparent in IrfanView?
Open the image in IrfanView, and select File, then Save as. When the Save Picture As… dialog appears, under the GIF section in the box on the right, select Save Transparent Color and then Choose transparent color during saving.
How do I lighten an image in IrfanView?
To Change the size: Choose image / resize/resample. Be sure “preserve aspect ratio” is checked. You can click the units radio button for “inches”…To Lighten a picture:
- Choose image / enhance colors.
- Slide the brightness bar almost all the way to the right.
- Slide the contrast bar around untl you like it.
- Choose OK.
How to avoid a white border around a PNG image?
So with an anti-aliased edge like you have there, where you really need different levels of transparency, it is simply applying a transparency color map (taken from your white background color) and applying it to the pixels that aren’t completely transparent. To avoid this, make sure you are saving as a PNG-24.
How to set the background for transparency in IrfanView?
IrfanView sets the background for transparency the same as the viewing color around the image. You just need to re-open the image with IrfanView after changing the view color to white. To change the viewing color in Irfanview go to: Options > Properties/Settings > Viewing > Main window color
How does the transparency work in png-8?
PNG-8 has very basic transparency support, on or off. So with an anti-aliased edge like you have there, where you really need different levels of transparency, it is simply applying a transparency color map (taken from your white background color) and applying it to the pixels that aren’t completely transparent.
Can a PNG image have a transparent background?
I have some PNG images which consist of a black shape and a transparent background. Unfortunately, IrfanView shows transparent background as black color, so I see just black on black. I’ve found in Irfan settings that I can change the window’s background color, but it changes only around the image, the transparent color is still black.