Mobile app · PDF: read, create, edit

MJ PDF

MJ PDF is a PDF reader, available on Android: themes and dark mode, annotation and highlighting.

Completely free
Android
Open source

Ad-supported exit link (Clictune): an intermediate page may show for a few seconds before the official website. Direct link to the website, no intermediate page

Download from the official source

Link to the official download page, ad-supported (Clictune): an intermediate page may show for a few seconds. Direct link to the download

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by F-Droid
License: GPL-3.0 — Open source (copyleft)confirmed by F-Droid
Open source: Yes
Commercial use: Yesconfirmed by F-Droid
Account required: not documented
Credit card required: Noconfirmed by F-Droid
Watermark: not documented
Ads: No
Platforms: AndroidEstablished by Android: F-Droid
Publisher: Mudlej
Latest version: 3.1.0 (19 August 2026)
Latest activity: 19 August 2026
Source code: gitlab.com/mudlej_android/mj_pdf_reader

Overview

MJ PDF is a PDF reader, available on Android.

Features described in its F-Droid listing and on its official website: themes and dark mode, annotation and highlighting.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“An open-source Android PDF reader focused on speed, privacy, and practical reading controls.” — official website, 10 November 2026
“Fast and smooth, with dark mode for the app and the PDF itself.” — F-Droid, 10 November 2026
“Highlight text, add notes, and save them into the PDF.” — F-Droid, 10 November 2026
“Fill PDF forms.” — F-Droid, 10 November 2026

At a glance

All of MJ PDF is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
No advertising
Commercial use allowed

Sources and checks

Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) — 9 November 2026
Facts collected from LicitPro automatic classification () — 6 November 2026
Last technical check: 6 November 2026
Listing written automatically from verified facts.

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