Generate a GoldSource-ready skybox from a single image. Two modes: position a cross overlay on a flat image, or project a 360° equirectangular panorama for seamless edges.
All file processing happens locally in your browser. No data is uploaded to any server.
PNG, JPG, TGA — or a .hdr / .exr panorama for seamless output
HDR/EXR files are automatically converted and switched to Equirectangular mode.