The most recent version of ScraperWiki depends on Poppler (or so the GitHub says). Unfortunately, it only specifies how to get it on macOS and Linux, not Windows.
A quick googling turned up nothing too promising. Does anyone know how to get Poppler on Windows for ScraperWiki?
Poppler Windows binaries are available from ftp://ftp.gnome.org/Public/GNOME/binaries/win32/dependencies/ -- but note that those aren't quite up-to-date.
If you're looking for Python (2.7) bindings (as this question's tag suggests), I requested them in the past via this bug report. A couple of people apparently managed to produce something, but I haven't checked those out yet.
As for a more recent (python bindings unrelated) poppler Windows binaries Google result,
See the answer by Owen Schwartz.
Finally, there's the brand-new (and currently very frequently updated) PyGObject all-in-one installer (mainly aiming to provide PyGObject-instrospected Gtk+3 Python bindings etc. for Windows), so if that's what you're looking for, go to http://sourceforge.net/projects/pygobjectwin32/files/?source=navbar