Image Blur Node is an add-on from Peakz that brings image blurring into Blender's Shader Editor. You blur images directly inside Blender without switching to a third-party program, adjusting the blur scale with a slider. It behaves like any other node in the shader editor.
The blurred image is saved in the same folder as the original with a '_blurred' suffix, and an Export Path option in the add-on preferences lets you set a different export location. The node works with Environment Texture Nodes and in the world mode of the Shader Editor. The generated Image Texture Node copies the original's parameters and connections, including color and alpha.
Applications include smoothing out displacement maps and adding artistic effects. The add-on requires the cv2 module; if you hit a 'No module named cv2' error, uninstalling, launching Blender with administrative privileges, and reinstalling resolves it. Version 1.0.7 updated the add-on for Blender 4.3, and support is available through the developer's Discord.