I would like to render/open PDF file (stored in SDCard) in Android without using in-build application or viewer.

1) We have tried MuPDF open source library but rendering using this library is very slow.

2) Can we use iText library for rendering PDF files in Android (i.e. iText as a PDF Viewer).

Is there any other PDF library(open source) that can be used in Android Or suggest basic guideline for developing PDF viewer for Android.