I suspect that you have a jpeg of a page of text that you wish to convert. As far as the text goes, the only pathway I know would involve what is called Optical Character Recognition (OCR). Some programs with this are bundled with scanners. Adobe Acrobat Pro includes some OCR ability, in case you know someone with that program. You'd have to make a pdf of the document first in this case, or, in the first, print the jpeg and then scan it and run the scan through OCR.

Best,
Ulodesk