MJ PDF - Fast PDF Viewer is a free and ad-free application designed for Android devices, providing a minimalist and user-friendly interface for reading PDF documents. Key features include the ability to remember the last opened page, a true full-screen mode, and a dark mode option for both the app and PDF files, catering to users who prefer a more comfortable reading experience. Additionally, it supports auto-scrolling with adjustable speed, making it easy to navigate through lengthy documents.

The application also allows users to open online PDFs via links, share and print documents, and handle multiple PDFs simultaneously. As a free and open-source software (FOSS), MJ PDF prioritizes user privacy, ensuring that no data is collected. With its straightforward functionality and focus on privacy, this app is an excellent choice for anyone needing a reliable PDF reader on their Android device.