: Now a native adjustment in recent versions of Paint.NET, this built-in tool performs a similar inversion calculation. Download and Installation Guide
A more advanced tool that lets you replace specific alpha ranges with 255. For example, you can tell it to only make "almost-transparent" pixels fully opaque while leaving others alone. paint net alpha to 255 plugin download
// Iterate pixels, set alpha to 255 for (int y = 0; y < height; y++) for (int x = 0; x < width; x++) ColorBgra px = surface[x,y]; px.A = 255; surface[x,y] = px; : Now a native adjustment in recent versions of Paint
Includes advanced transparency tools like Switch Alpha to Gray and Apply Alpha Mask , which are often used for direct alpha channel manipulation . Native Method (No Plugin Required) // Iterate pixels, set alpha to 255 for
: This plugin lets you define a range of alpha values (e.g., 200–250) and replace them with an alpha value of 255 . It also features an "Adder" slider that can increase current alpha values until they hit the 255 cap.