How to convert pdf to fb2 for an e-book while preserving the formatting of program code examples?

Question

Electronic books

I decided to upload a book on programming to my reading room in order to educate myself in the subway. Found a suitable variant in pdf. Uploaded. It is displayed normally, but turning pages is very long, a minute and a half.
I overtook the PDF to FB2 converter, it became fast to scroll through, but another problem arose. The book contains source codes for C# code, in FB2 they are all warped.
Reader model: Sony prs-t2
Actually, the question is:
How would I reformat the book so that it scrolls quickly and formatting is preserved. Maybe there is a tricky way to overtake it in FB2, or even some other format is worth taking.
PSI am aware that FB is a Fiction Book, that is, the format is sharpened to the worst. literature, and not technical, but nevertheless, someone can advise something sensible.
PPS Please do not exercise wit in the spirit of "buy a paper book", "print on a printer", etc.

Answer 1

Download Caliber and try - there are a lot of formats, maybe you'll be lucky with some - and the reader supports, and the formatting will be saved.

Answer 2

There was a similar problem, I overtook the pages into pictures, called them by page numbers, and read them in the image viewer

Answer 3

finereader? At least the results will be better. Only better in epub. I think Sony should keep it.