I think I have tried available options to scale image but they produce little blur result for pixel art.
I used resample and smart(3x) zoom. Smart(3x) zoom was good than other. However, little blurriness still presents. In internet people say we need to resize using 'nearest neighbour(hardEdge)' sampling method.
My Pixel art photo is 100 * 100 px. Funny to say, if we first fit our image to window(alt + f) then take screenshot using printScreen on keybord or screenshot software we will have big pixel art size that looks accurate. Using this method I got 900 * 900 pixel size.
Any views and solutions are welcome.
I have listed actual pixel_art, smart(3x) zoom version, fit image to windows version.