While every pixel has transparency information associated with it, every layer also has an associated opacity value.
#PAINT.NET REPLACE COLOR WITH TRANSPARENT SOFTWARE#
If you save the image and then view or load it with other software then the checkerboard pattern will not be there (unless, of course, if that other software also uses a checkerboard pattern to simulate transparency). However, as previously mentioned, it is not actually part of the image. You may think of the checkerboard pattern as a virtual background layer, or "layer zero," which is always below all layers that are shown in the Layers window. If you see this then it means that part of your image is transparent - the checkerboard pattern is not actually part of the image. In order to simulate this Paint.NET uses a checkerboard pattern. However, transparent pixels cannot be displayed on a computer monitor. Paint.NET uses a technique called alpha compositing to be able to display a layered image on a standard computer monitor. (Other software may refer to this as ranging from 0% to 100%.) If a pixel is transparent, then pixels from the layers below will show through. This alpha value may range from 0 (completely transparent) to 255 (completely opaque).
The "A" is for alpha and is used to store information about the transparency of a pixel. The RGB part stands for red-green-blue, and is used to store traditional color intensity. Pixels and Transparency Įvery layer in Paint.NET is composed of pixels which are stored in the RGBA format. Paint.NET displays this stack as if you were viewing it from the top and with no perspective (layers do not get "smaller" when they are closer to the bottom of the stack, which would place them "farther away"). You may think of "layers" as a stack of transparency slides that, when viewed together, form a complete image. Paint.NET allows you to use layers and blending modes as the foundation for composing images.
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