Is there a way to convert an image to an html
equivalent of the image, by having an html
table divided up into many cells each having a certain background colour which would act like pixels in an image? Much like ASCII art.
I would see this as a way to have a corporate logo in an email signature without having to worry about email clients blocking images.
Yep, loads of people have done this: http://pgl.yoyo.org/img2html/ is an example.