Is it possible to somehow increase the size of the image?

Question

Images

Website requirement:

• not less than 5 mb;
  
• format: pjp, jfif, pjpeg, jpeg, jpg;
  

The problem is that my image uses a small spectrum of colors and there, well, it’s not like 5 mb comes out (original weight 22kb, format 1200X1200).
I tried to increase the output megapixels, but in the end I increased the weight only to 267kb.
If at all possible, please write.

Answer 1

not less than 5 mb;

Where is that?
Use rarjpeg: www.netlore.ru/rarjpeg (just the first link in Google)
Put something in there for weight.

Answer 2

You can increase the weight of the image by a combination of 3 points:
But this, of course, is some kind of perversion ...