Your Professional Offline PDF Toolkit.
A fast, secure, and 100% offline PDF management system for mobile professionals.
Core Features
⚡ High-Speed Engine
Instant loading of large documents powered by a high-performance rendering engine.
📖 Dual Reading Modes
Support for both Horizontal (magazine style) and Vertical (continuous scroll) swiping.
🌙 Night Mode & Smart Zoom
Native Dark Mode support and fluid pinch-to-zoom for detailed document inspection.
🔒 Privacy & Security
100% offline processing and Zero Data Upload. Protect sensitive files with 128-bit AES encryption.
🧰 Professional Tools
Image to PDF, Merge, Split, and Compress files locally on your device hardware.
📁 Organized Storage
Auto-scan finds all PDFs instantly. Built with Room Database for fast local storage.
100% Offline & Secure workflows.
Watch how Cobra PDF flows seamlessly through local document processing, encryption, and dark mode reading. Implemented natively in Kotlin with MVVM architecture.
App Screenshots
User Reviews
"The best offline PDF toolkit I've ever used. Lightning fast!"
- Professional User
Ready to upgrade your documents?
Download Cobra PDF on Google Play and securely manage your files offline.