PBRica user documentation: system requirements (Blender 5.2+, Windows x64 tested only, macOS ARM64 and Linux x64 best-effort), add-on installation from disk, first generation walkthrough, input guidance, the full panel reference, output size and aspect, Quality and Fastest modes, device selection, OpenGL backend recommendation for reliable inference (Vulkan can interfere, especially in Quality mode), Relief Finish, Normal Blend, generated maps, 8-bit and 16-bit export, performance expectations, platform support, troubleshooting and license. The documentation also explains the 1K to 4K workflow and how to get consistent albedo, normal, roughness and height maps from one texture inside Blender's Image Editor.