PhotoDemon provides a highly optimized Box Blur tool. Box blur works by blurring a “box” area around each pixel, and you can choose both the width and height of the box to use. By using different values for width and height, it is possible to obtain very unique horizontal or vertical blurs.
Like all PhotoDemon tools, a dedicated command bar allows you to save and load custom presets, randomize parameters, and reset to default values. Last-used settings are automatically saved and restored, and all changes provide a real-time preview (no click or mouse button release required).