ALalright2565·Dec 28, 2025
The Flameshot screenshot tool uses an interesting variant of pixelation that does protect the text from unredaction: https://github.com/flameshot-org/flameshot/commit/533a1b7d55...
> Since pixelation does not protect the contents of the pixelated area (see e.g. https://github.com/bishopfox/unredacter), _pseudo-pixelation_ is used:
> Only colors from the fringe of the selected area are used to generate a pixelation-like effect. The interior of the selected area is not used as an input at all and hence can not be recovered.
The edges of the pixelated area are used the generate a color palette, and then each pixel is generated by randomly sampling from that pallete's gradient.
In Never Use Pixelation to Hide Sensitive Text (2014)