I used to use PDF.js for a while (on Linux), until I switched to KParts because it was having difficulty rendering certain kinds of PDF documents. KParts uses t

I used to use PDF.js for a while (on Linux), until I switched to KParts because it was having difficulty rendering certain kinds of PDF documents. KParts uses the same underlying engine that powers Okular (KDE's default PDF reader.) It renders everything properly and is much faster than PDF.js. It reminded me of Foxit on Windows. KParts might be only available on Linux though...