In the past in CEF 1 there was a function in CEF 1 that allowed to get the bitmap of rendered content. Such feature was removed from upstream CEF, however it would be nice to have it back in cefpython. There are various native APIs on Windows/Linux/Mac that allow to get a screenshot of window's content. When using off-screen rendering you are already provided with a bitmap in RenderHandler.OnPaint. This issue is to expose such functionality also in windowed mode.