[NTLK] Converting NewtonBooks to ePub

[Matthias Melcher]

> On 25. Feb 2026, at 02:39, Victor Rehorst <victor at chuma.org> wrote:
> 
> A complete shot in the dark here, but could it be - or are you referring to - Newton Streamed Object Format (NSOF)?

Books are stored in the .pkg file format. The pkg format is entirely documented. Search for NewtonFormats1.1.pdf . Reading a book pkg file with tools like Newton Framework will result in a Newton object tree that contains all the text, formatting, and attributes. 

Newton Framework can be used to look at the details - the book format itself is not documented, but most of the attributes are pretty obvious - and can also be used to export the text in a different format, but it would require a little bit of programming.

How many books are there all together where ist would be worth the effort? 

 - Matthias