I’m trying to help a friend upscale some 1024x768 artwork (iPad paintings) to higher pixel resolutions so it will look better when printed. Photoshop’s own scaling + playing with filters and sharpening isn’t good enough. Neither is vector tracing. But I see lots of great examples online; the “hq4x” or “hqnx” open source methods look especially nice! But I remember in the early 90s, bitmap art could be printed with similarly sharp but less-advanced upscaling. Even that would be sufficient, but I don’t know what it was called. How can I do this kind of sharp upscaling... without compiling source code? Some utility or plugin would be well worth my time. Diving into open source and compilers would not be! Thanks for any Photoshop OR non-Photoshop ideas!