Here is a lesson you don't often see, but has worked every time I've used it: "I was able to incrementally convert program form using Poppler API to using Popp

Here is a lesson you don't often see, but has worked every time I've used it: "I was able to incrementally convert program form using Poppler API to using Poppler via engine abstraction to using mupdf via Engine abstraction." Make major changes incrementally.