It is possible to modify Preview Blur with script?

[SCarewe (Sebastian Carewe)]

How is the blurring of the preview view realized?

That is a CoreImage filter on the view/layer. here is some code that might help: CGFloat radius = 30; _blurFilter = [CIFilter filterWithName:@"CIGaussianBlur"]; [_blurFilter setDefaults]; [_blurFilter setValue:@(radius) forKey:kCIInputRadiusKey]; if (@available(macOS 10.14, *)) { view.layer.filters = @[_blurFilter]; } else { view.contentFilters = @[_blurFilter]; }