DocScan - PDF Document Scanner

📄 DocScan - PDF Document Scanner & Document Manager - Turn your phone into a powerful portable document scanner and PDF converter! Effortlessly scan receipts, contracts, notes, ID cards, whiteboards, and multi-page documents into crisp, high-resolution PDF files. 🌟 KEY FEATURES: 1. 📷 SMART CAMERA SCANNER WITH AUTO-FOCUS & ZOOM: - Real-time tap-to-focus and continuous auto-exposure with cyan reticle indicator. - Smooth pinch-to-zoom and 1x, 2x, 3x quick zoom presets. - Viewfinder document guide with laser scanning line and torch flashlight support. - Multi-page batch scanning mode. 2. 📐 4-CORNER PERSPECTIVE CROP & AUTO-FLATTEN: - Automatic paper edge and corner detection. - Interactive 4-corner drag adjustment with 2.5x circular magnifier loupe. - Advanced 3D homography perspective rectification to flatten skewed or tilted photos into perfectly aligned rectangular pages. 3. 🎨 PROFESSIONAL DOCUMENT ENHANCEMENT: - Magic Color: Automatically whitens paper background and sharpens text ink. - B&W High Contrast: Converts document pages to clean photocopy-style black and white. - Grayscale: Smooth monochrome document view. - Original Color: Preserves exact original photo colors with brightness and contrast sliders. 4. 📑 MULTI-PAGE PDF MANAGEMENT: - Add, remove, rotate, and reorder document pages easily. - Export to standard A4 page formats. 5. 🔍 BUILT-IN PDF READER & MANAGER: - View generated PDF documents instantly with built-in PDF viewer. - Rename, search, and delete saved PDF files. - Print directly to any wireless printer. 6. 📤 EASY SHARING & PRIVACY: - Share PDF documents via Email, Messaging apps, Cloud storage, or Save to Device. - Fast, secure, and 100% offline document processing for ultimate privacy. 👉 Download DocScan today and manage all your document scanning needs! --- `https://hoanganhphan91.github.io/hoanganhphan91/`

Added smart 4-corner perspective crop and automatic document flattening. Enhanced camera scanner with tap-to-focus and zoom controls, upgraded document clarity filters, and Android 16 compatibility.