Known for verified high-resolution images, you can find various Hogwarts night scenes and concept art specifically scaled to 2560x1440.

Finding a high-quality (QHD) wallpaper of Hogwarts Castle is fairly straightforward, as this is a popular resolution for desktop setups. Sites like Wallpaper Abyss and WallpaperFlare offer dedicated galleries for this specific size. Where to Find 2560x1440 Wallpapers

Use heavyweight matte or satin photo paper to capture the dark, atmospheric details of Hogwarts without the glare of high-gloss finishes.

This platform offers a filtered Harry Potter collection specifically for QHD/16:9 displays.

If your mention of "proper paper" refers to the wallpaper:

For a sharp print, an image should ideally be 300 DPI. A 2560x1440 image is roughly 8.5 x 4.8 inches at high quality. If you want a larger poster, you might need a 4K resolution image instead.