Privacy-first PDF utility: merge, split, rotate, and protect
About this app
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.
Licensed under GPL-3.0-or-later.
What's New in v1.1
Imported from the F-Droid repository index.
- PaperKnife+ v1.1:
- - Fixed typo in Unlock tool description
- - Fixed history showing original file name instead of output file name
- - Fixed merge tool rejecting same file added multiple times
- - Fixed watermark transparency not applied to output PDF
- - Added export saved signature as PNG
Version history
May 27, 2026 · 7.8 MB · Android API 24–34 · code 2
Imported from the F-Droid repository index.
- PaperKnife+ v1.1:
- - Fixed typo in Unlock tool description
- - Fixed history showing original file name instead of output file name
- - Fixed merge tool rejecting same file added multiple times
- - Fixed watermark transparency not applied to output PDF
- - Added export saved signature as PNG
SHA-256 23dc88fc08549d8794d8f4db0bbff2b7920e5fb8a277a72de15223350c521fb0
Mar 28, 2026 · 7.8 MB · Android API 24–34 · code 1
Imported from the F-Droid repository index.
- PaperKnife+ first release!
- - PDF Merge & Split
- - PDF Password protection
- - Image to PDF conversion
- - PDF to Images export (ZIP)
- - Page rotation and reordering
SHA-256 cf1e122c13065f4f6da3a614ba80bf9614d4ad9dec1ee9ab6fc95d761b68e47f
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.paperknifeplus.app is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall PaperKnife+ first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of PaperKnife+, and a listing is removed when the evidence for it stops holding up.
Get PaperKnife+
Every source we list for com.paperknifeplus.app is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
23dc88fc08549d8794d8f4db0bbff2b7920e5fb8a277a72de15223350c521fb0
Signing certificate
6bad1d719a8bb97c73fa60aa08b2b0d733c7753b0fc674a1306fcd9462238af8
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.