[poppler] General interest: regression testing techniques for pdfs?

[Martin Schröder]

2010/10/29 Albert Astals Cid <aacid at kde.org>:
> If they are equal, good no change happened! If they are different then
>  convert a.png b.png -compose difference -composite -colorspace gray miff:- |
> display

http://www.qtrac.eu/diffpdf.html :-)

Best
   Martin