MikeK61 I asked if you had a jpeg and it appears like you do.
And you took a perfect picture of something that was dark almost unreadable as it is? I'm still guessing.
But you have a jpeg and you could not make it brighter in gimp or xnview?
I stand by all my suggestions for a jpeg and would add if you could find some imagemagick terminal commands that might do as well.
the jpeg exists to be manipulated, I wonder why it's not working?
you should be able to remove layers and enhance clarity/brightness.
I know I could do this in photoshop/illustatror back in the day, so why are the linux equivalents not working?
maybe take a picture of your piece of paper again with as many powerful lights as you can, that way you'd be starting with an advantage?
darktable
or fotoxx
in repo could work?