MJ PDF is a fast, private, completely free, and open source PDF reader. It combines a powerful reader with a full PDF document library, with no ads anywhere!

Reading
- Fast and smooth PDF rendering.
- Dark mode for the app and PDF pages.
- Edge-to-edge full screen with configurable shortcut buttons.
- Horizontal, vertical, dual-page, and right-to-left reading modes.
- Auto-scroll with adjustable speed.
- Hide margins, control brightness, lock zoom, and rotate pages.
- Search inside documents with live results.
- Table of contents, bookmarks, links, and navigation history.
- Text Mode for reading PDFs with reflow, fonts, and themes.
- Open password-protected and online PDFs.
- Share and print PDF documents.

Annotations
- Highlight text and add notes.
- Draw handwritten signatures.
- Fill PDF forms.
- Save annotations directly into PDF documents.
- Select text for copying, sharing, web search, translation, and dictionary lookup.
- Share quotes as images.

Library
- Browse your device with Recent, Library, and Folders views.
- Search every PDF on your device.
- Rename, delete, share, and manage PDF files directly from the library.
- Continue reading from the last opened page.
- Organize documents as To Read, Reading, Completed, and more.

Privacy

Your PDF documents and reading activity stay on your device. MJ PDF has no ads or tracking.

If the app crashes, you can choose whether to send a technical diagnostic report to help identify and fix the problem. A crash report is never sent without your approval and does not include your PDF documents.

Storage or All files access is used only to discover, open, rename, delete, and manage PDF documents across device storage and removable storage.

Internet access is used to open PDFs from links and to send a crash report only when you explicitly approve it.

MJ PDF is licensed under GPLv3.

Official website:
https://mudlej.com/projects/mj-pdf

Source code:
https://gitlab.com/mudlej_android/mj_pdf_reader