Depends. If its not big enough, run it through something like Waifu2x or similar to upscale it. Then, since the background is white, make a white canvas that matches your desired dimensions in photoshop or something similar. Drag your newly upscaled image on top, then scale until it fits inside the white background. It probably won’t fill up all the horizontal space, unless you want it to look like big chungus.
s_kavee
Depends. If its not big enough, run it through something like Waifu2x or similar to upscale it. Then, since the background is white, make a white canvas that matches your desired dimensions in photoshop or something similar. Drag your newly upscaled image on top, then scale until it fits inside the white background. It probably won’t fill up all the horizontal space, unless you want it to look like big chungus.
https://resizeimage.net/