Lightweight Android document scanner — pick from gallery or camera, adjust 4 corner points (like Adobe Scan), auto-straighten perspective, enhance contrast, and save clean results that look like text on white paper.

• Package ID: id.arizu.scanimage
• Min SDK: 23 (Android 6.0)
• Target/Compile SDK: 35 (Android 15)
• UI: Jetpack Compose + Material 3
• Camera: CameraX
• Status: Open Source 🎉

• 📷 Camera & Gallery: capture with CameraX or pick from gallery
• 🟩 Manual 4-point crop: drag four handles to outline the document
• 📐 Perspective correction: warp the selection to a flat rectangle
• 🧼 Clean paper look: grayscale + contrast boost for crisp text
• 💾 On-device saving: offline, no servers
• 🔗 Share & Delete: quick actions in dashboard
• 🌓 Modern UI: Compose + Material 3

git clone https://github.com/arizu-id/scanimage.git
cd scanimage

1. Pick a source — camera or gallery
2. Adjust 4 points — outline your document
3. Scan — straighten perspective + enhance
4. Save — file stored in device media storage
5. Manage — share or delete from dashboard

• Kotlin 1.9.25
• Android Gradle Plugin 8.6.1 (Java 17)
• Jetpack Compose (BOM 2024.09.03)
• Compose Compiler 1.5.15
• Material 3, Lifecycle 2.8.6
• CameraX 1.3.4
• Coil 2.6.0

• Images (JPG): saved in Pictures/ScanImage

• Filename format: Example: ScannedDocument_01-10-2025_1696168456123.jpg

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• CAMERA — required for taking pictures
• READ/WRITE_EXTERNAL_STORAGE — legacy only (API ≤ 28)
• On Android 10+ → uses scoped storage (MediaStore)