I am looking for a highly skilled image processing expert to enhance and reconstruct low-quality images into true 4K UHD resolution with exceptional clarity and detail retention. I will provide input images in WEBP format, and the final output must be delivered in PNG format with lossless quality. The key requirement is that the final image must not resemble a typical AI-upscaled result, as I have already tested multiple AI tools that produce blurry textures, artificial sharpening, plastic-like surfaces, and a loss of realism, which are not acceptable. Instead, I need a result that feels naturally high-resolution, as if the image was originally captured in 4K using a professional camera. The final output should maintain sharpness even when zoomed in, without any fading, blurring, or pixel breakdown. It must preserve the original structure, proportions, and design accuracy while enhancing micro-details, textures, and edges in a natural and realistic way. The image should have clean, crisp edges, balanced lighting, and true-to-life colors without any over-processing, artificial glow, or exaggerated sharpening. The focus should be on true detail reconstruction rather than simple enlargement. From a technical standpoint, the task includes converting WEBP files into high-quality PNG format and enhancing them to true 4K UHD resolution (3840×2160 or higher depending on the aspect ratio). The process should involve advanced or manual techniques rather than relying solely on automated AI upscaling tools. It is important that the final result maintains realistic materials, lighting, and overall visual integrity without introducing artifacts or altering the original design in any way. The end goal is to achieve a crisp, ultra-detailed, and professional-grade 4K image that remains sharp and clear even under close inspection or zoom, making it suitable for high-end use such as e-commerce, marketing, or print applications.