PaperKnife+ for Android
PaperKnife+ for Android is a free, open-source reading app for Android. Privacy-first PDF utility: merge, split, rotate, and protect. It has 245 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid.
github.com/potatameister/PaperKnifePlus (opens in a new tab)
About PaperKnife+ for Android
PaperKnife+ is a privacy-first PDF utility for Android that works 100% offline. Features: - Merge & Split: Combine PDFs or extract pages visually - Secure: Add or remove passwords (100% locally) - Convert: Convert Images to PDF and Export PDF pages as Images (ZIP) - Edit: Rotate and Rearrange pages with ease - And more! No internet permission, no trackers, zero servers. All processing happens on your device. Built with Jetpack Compose and Kotlin for a modern, smooth experience.
Privacy and F-Droid
F-Droid builds PaperKnife+ for Android from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
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What is PaperKnife+ for Android?
PaperKnife+ for Android is a free, open-source reading app for Android. Privacy-first PDF utility: merge, split, rotate, and protect. It has 245 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid.
Is PaperKnife+ for Android free and open source?
Yes. PaperKnife+ for Android's source code is public on GitHub under the GPL-3.0-or-later license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install PaperKnife+ for Android?
You can install PaperKnife+ for Android from F-Droid (package com.paperknifeplus.app); the links are on this page. Its GitHub repository also publishes releases (latest: v1.1).
Is PaperKnife+ for Android still maintained?
The repository's most recent commit was on May 23, 2026. Its F-Droid listing was last updated on May 27, 2026. appsgit only lists apps whose repository had a commit in the last six months.