ClearPDF

Modern open-source PDF toolkit for Android with a beautiful liquid glass inspired UI.

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✨ Features

• 📖 Fast PDF reader with smooth, Adobe-style pinch-zoom & pan
• ✍️ Annotate: pen, highlighter, shapes, arrows + on-device text selection (OCR)
• 🗂️ Organize pages: reorder, rotate & delete — losslessly
• 🔀 Merge multiple PDFs (lossless — text & vectors preserved)
• ✂️ Split and extract PDF pages (lossless)
• 🗜️ Compress PDFs with quality controls
• 🖼️ Images → PDF and 📄 Create PDFs from scans or blank pages
• 🔎 Extract text from PDFs (copy / share)
• 📷 Document scanner with edge detection (Google ML Kit)
• 🌗 Beautiful liquid glass UI for light & dark mode
• ⚡ Smooth performance built with Jetpack Compose
• 🔒 Offline-first & privacy friendly — no cloud PDF processing, accounts, ads, or analytics
• 🛡️ No hidden uploads — PDF work stays on-device; scanner/text-selection ML components are disclosed in NOTICE

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📱 Screenshots

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🧊 Liquid Glass UI

ClearPDF uses a custom Android liquid glass inspired design system with:

• Blur & transparency effects
• Floating glass cards
• Dynamic gradients
• Smooth rounded layouts
• Adaptive light & dark themes

Designed specifically for modern Android devices using Jetpack Compose.

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🛠 Tech Stack

• Kotlin
• Jetpack Compose
• Material 3
• Android PDF rendering libraries
• Android Liquid Glass effects

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🚀 Getting Started

Clone the repository:

git clone https://github.com/Chethan616/ClearPDF.git

Open the project in Android Studio and run:

1. Sync Gradle
2. Build the project
3. Run on a real device or emulator

The project uses JDK 17 or newer and Android SDK 36. Build the release variant locally with:

./gradlew assembleRelease

The release build is intentionally unsigned for contributors unless local signing credentials are configured. Never commit key.properties, keystores, APKs, or private documents.

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❤️ Open Source

ClearPDF is fully open source and built for the Android community.

If you like the project:

• ⭐ Star the repository
• 🍴 Fork the project
• 🛠 Contribute improvements
• 📢 Share it with others

See CONTRIBUTING.md for the offline-first contribution principles and release workflow. See PRIVACY.md for the app's privacy and offline behavior. Please use the issue templates for bugs and feature requests.

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🙌 Credits

Liquid glass and backdrop effects are inspired by and partially adapted from:

AndroidLiquidGlass by kyant0
https://github.com/Kyant0/AndroidLiquidGlass

Lossless PDF page operations and text extraction are powered by:

PdfBox-Android by Tom Roush (a port of Apache PDFBox)
https://github.com/TomRoush/PdfBox-Android

Both are licensed under the Apache License 2.0.

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🤝 Contributing

Contributions are welcome.

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Open a pull request

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📄 License

MIT License — see LICENSE.

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💖 Support

If you find ClearPDF useful, consider supporting development:

Repository funding metadata lives in:

.github/FUNDING.yml