Bitmap to controlled alpha/stencil

If you rely on stencils in your texture work in Substance Painter as often as I do, then you might have experienced the lack of settings (brightness, contrast, invert) of your favorite custom alpha. And then it dawned on me - why not make a customizable stencil where you could put an image? This is five-minute case. Well, here is the stencil. Hope it'll help you.

Make sure you make your image squared before drop it to Painter.

Simple Graph to convert bitmap to controlled alpha (like default alphas in Painter) in Substance Designer also included in archive.