This image is so crisp that the fries almost look fake.
P.S. consider the quality of the image, the pixels, instead of the size.
The best part of this tool is that it's online, so no download required to actually use it; and it's free - you pay $0 dollars to enhance your low quality images or download them.
At the most, the creators appreciate you attributing their images (giving them credit on your content if you so choose).