A4 PNG Upscale to A2 Without Quality Loss

I have a high-resolution PNG image in A4 size that needs to be upscaled to A2 for print purposes. The project is solely focused on ensuring that the image maintains its quality and resolution during the process.

Ideal skills for the job:
- Proficiency in image editing software (like Photoshop or similar)
- Experience with image upscaling for print
- Understanding of resolution and image quality preservation

Please note, the primary use of the upscaled image will be for print.