Hi, I noticed that if my HTML input contains bytes, which have x00 hex code (null bytes), prince exits right after it encounters that byte. As a result I get a pdf representation of that part of input, which was before the null byte.

You're right! For now, I can only recommend removing NULL bytes from your document, as they shouldn't be there anyway. We'll take a look at the parser and see why it's cutting off the document there.

We have now released Prince 9, which has no problems with NUL bytes in HTML documents.