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potatameister/PaperKnife

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potatameister/PaperKnife has 1,531 GitHub stars and 107 forks. GitHot measured 0 stars in 24 hours. Last checked 2026-11-08 22:13 UTC. Last push 2026-10-01.

How these counts are measured

Privacy-first PDF utility (Zero-Server Architecture). Merge, split, compress, and edit PDFs 100% locally on your device. No uploads, no servers, no tracking.

1,531 stars107 forks

What you can do

  • Merge & split PDFs
  • Compress with quality presets
  • Password protect and unlock PDFs
  • Convert PDF pages to images (JPG/PNG, 72–300 DPI)

Measured star growth

in 24h
0
in 7 days
Collecting history
in 15 days
Collecting history
in 1 month
Collecting history

Net star changes over overlapping periods, not daily totals. Missing measurements are left blank. Stars measure attention, not software quality.

README.md

Original

PaperKnife Logo

PaperKnife

A privacy-first PDF utility: merge, compress, sign, and protect. Works 100% offline — no servers, no trackers.

Download APK Web App License

Screenshots

Web View Android View

Features

  • Merge & split PDFs
  • Compress with quality presets
  • Password protect and unlock PDFs
  • Convert PDF pages to images (JPG/PNG, 72–300 DPI)
  • Draw, upload, and reuse signatures
  • Watermarks, page numbers, metadata cleaning
  • Deep OCR text extraction (full version only)
  • And more!

All processing happens on your device. Your files never leave your phone.

Download

Get the latest APK: PaperKnife v1.1.0

  • Full (GitHub releases): everything, including offline OCR.
  • Lite (IzzyOnDroid): same app without the OCR engine — smaller download.

Get it at IzzyOnDroid

Or use the live site — installable as a PWA for offline access.

Run the web version locally

Requirements: Node.js 22+ and git. Everything below runs on your own machine.

git clone https://github.com/potatameister/PaperKnife.git
cd PaperKnife
npm ci                  # install dependencies (also used by CI)
npm run vendor:ocr      # optional, only needed for Deep OCR (one-time)
npm run dev             # start the local server (http://localhost:3000)

Notes:

  • npm run vendor:ocr is optional — skip it and everything works except Deep OCR. The engine files (~30 MB) are never committed to git, so a fresh clone cannot do OCR until you run it. Re-running later is safe — it skips what is already there.
  • npm run build produces a static dist/ folder you can serve with any static host (npm run preview to check it locally). No server component exists — it is plain files.
  • To build the Android APK yourself, you additionally need JDK 21 + Android SDK, then npx cap sync android after npm run build. The OCR files (if vendored) are bundled into the full APK automatically.

Support

Sponsor

PaperKnife is a solo project — open-source, ad-free, and tracker-free. All support options live on the support page. If it saved you time or kept your data safe: chip in, star the repo, or share it with anyone who handles sensitive documents.

License

GNU AGPL v3 — free forever, auditable by anyone.

Made with care by potatameister

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