Upscale PNG for Large Print

I have a single PNG that is only 233 × 752 px and I need it transformed into a print-ready file for a large-format output. The brief is straightforward: enlarge the image to 1200 DPI while keeping every line, shade, and pixel as true to the original as possible—no colour shifts or artistic tweaks, just a clean, high-fidelity upscale.


Please use whatever workflow you trust most (AI up-scaling, vector reconstruction, manual retouching, or a combination) so long as the final file meets the following acceptance criteria:

• High-resolution PNG at 1200 DPI, proportionally matching the source dimensions
• Original colours and overall look preserved—no added saturation, tint, or contrast changes
• Sharp enough for close inspection on a large print without visible artefacts, pixelation, or banding

Deliver the finished PNG plus a brief note on the method used so I can replicate or request tweaks if needed.