Open Source PDF Readers for Android

Highly versatile PDF and XPS solution offering customizable rendering and viewing with features like digital signatures, redactions, and annotations.

Librera Reader is a highly customizable and feature-rich application for reading books in PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR formats on Android devices.

An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.

Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience.

A totally free of cost and ads PDF documents reader.

Document Viewer is a highly customizable document viewer for Android, fork of the last GPL version of EBookDroid .

Simple Android PDF viewer based on pdf.js and content providers. The app doesn't require any permissions.

Read fluently and comfortably, with simple and clear interface.

Supported Document Types: PDF, EPUB, MOBI, CBZ, FB2, XPS, TXT, HTML, OFFICE(DOCX, XLSX, PPTX) and ZIP/GZIP

Features: Horizontal / Vertical Flip Continuous Scroll Lock Stray: Keep scroll straight Margin Crop Focus M.

Orion is a pdf, djvu, xps and cbz file viewer for Android devices, based on mupdf and DjVuLibre libraries.

The simplest PDF viewer. Safe (doesn't require permissions), lightweight (just 6,9MB) and modern.

Shelf is a convergent document viewer that supports PDF and EPUB files. With Shelf, you can organize your document collection by creating tags, like other Maui applications.

A simple PDF document viewer.

modern computer flatboat is a mobile pdf viewer written in Qt and using MuPDF's libfitz.