PDF Toolkit

A privacy-first, offline PDF utility for Android

📱 Get it on Android

📥 F-Droid Installation & Benefits

PDF Toolkit is published on F-Droid, the repository of free and open-source Android software: - 100% Free & Open Source: Built using the fdroid build flavor with 0 proprietary dependencies or trackers. - Offline Tesseract OCR Engine: Performs Optical Character Recognition completely on-device without Google Play Services or network connections. - Reproducible & Verified: Standard F-Droid automated builds compiled from source.

To Install via F-Droid: 1. Download the F-Droid Client App. 2. Search for PDF Toolkit or open com.yourname.pdftoolkit on F-Droid. 3. Tap Install for automatic updates and verified security.

Offline · Privacy-first · No account required

✨ Features

📄 PDF Management

• Merge PDF & Images — Combine multiple PDF files and images (JPG, PNG, WebP) into a single document with File & Page preview modes
• Split PDF — Split into multiple files or specific page ranges
• Compress PDF — Reduce file size while maintaining quality
• Reorder Pages — Visual drag-and-drop page reordering
• Rotate Pages — Rotate specific pages or entire documents
• Extract Pages — Extract specific pages to create new PDFs
• Delete Pages — Remove unwanted pages

🔄 Conversion Tools

• Images to PDF — Create PDFs from gallery images
• PDF to Images — Convert PDF pages to high-quality images (JPG/PNG/WebP)
• HTML to PDF — Direct webpage to PDF conversion
• Scan to PDF — Camera-based document scanning with automatic edge detection

✏️ Editing & Annotation

• Annotate — Highlight, draw, and markup PDFs with custom Canvas layering
• Sign PDF — Add digital signatures to documents
• Fill Forms — Complete PDF forms on the go
• Flatten PDF — Make forms and annotations permanent

🔒 Privacy & Security

• Lock PDF — Password-protect your files
• Unlock PDF — Remove passwords (with valid password)
• Watermark — Add text or image watermarks
• All processing on-device — No cloud, no servers
• No internet permission — Completely offline capable
• No data collection or tracking

🔤 OCR & Text

• Extract Text — Pull text content from PDF pages
• ML Kit OCR — Play Store flavor (on-device, smaller APK)
• Tesseract OCR — F-Droid and opensource flavors (100% open source)

🖼️ Image Tools

• Compress Images — Optimize file sizes
• Resize Images — Change dimensions
• Format Conversion — JPG, PNG, WebP
• Remove Metadata — Strip EXIF data for privacy

🏗️ Build Flavors

All flavors are privacy-first with no ads, no analytics, and no proprietary dependencies except ML Kit in the Play Store flavor.

🛠️ Tech Stack

🚀 Getting Started

Prerequisites

• Android Studio Hedgehog or newer
• JDK 17+
• Android SDK 26+

Build

# Clone the repository
git clone https://github.com/Karna14314/Pdf_Tools.git
cd Pdf_Tools

# Play Store flavor (ML Kit OCR)
./gradlew assemblePlaystoreRelease

# F-Droid flavor (Tesseract OCR, no proprietary deps)
./gradlew assembleFdroidRelease

# Opensource flavor (fully FOSS)
./gradlew assembleOpensourceRelease

📦 Download

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'feat: add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request against master

Important: The F-Droid and opensource flavors must remain free of proprietary dependencies. Any new dependencies must be compatible with the F-Droid inclusion policy.

See open issues for feature requests and bug reports.

👤 Maintainer

Narisetti Chaitanya Naidu
GitHub: @Karna14314

📄 License

Copyright © 2026 Narisetti Chaitanya Naidu

Licensed under the Apache License, Version 2.0
See LICENSE for full text.