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Edge Canny & Hough Transform
When you focus on a document, the app applies edge-detection algorithms to detect contrasting boundaries between the paper and background surface, calculating the precise 4-point polygon.
📄 Mobile PDF Digitization Suite
Scan Any Paper Document & Save as Clean PDF
Turn receipts, legal contracts, business cards, tax forms, and IDs into razor-sharp digital PDFs. Real-time automatic boundary detection, perspective angle rectification, and optical image enhancement filters — 100% offline.
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📄 High-Resolution Document Engine
Studio-Grade Document Scanning
Studio-Grade Document Scanning
Directly on Your Phone
Forget blurry, uneven phone camera snapshots of paperwork. The built-in document digitizer locates paper borders automatically, straightens perspective distortion, eliminates background shadows, and produces crystal-clear multi-page PDFs.
- Intelligent Edge Detection: Automatically locates paper corners even on dark desks or textured backgrounds.
- Perspective Correction: Flattens tilted or angled shots into perfectly square document pages.
- Adaptive Enhancement Filters: Choose between Magic Color, Greyscale, and High-Contrast Black & White modes.
- Multi-Page PDF Merging: Combine dozens of pages, receipts, or contracts into a single organized PDF file.
- Offline OCR Text Extraction: Extract editable printed characters from photos locally without sending images to the cloud.
- Flexible Export: Export as standard vector-compatible PDF or high-resolution JPEG files.
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Automatic Corner Detection
Detects 4 document corners in real-time, eliminating manual cropping steps.
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Perspective Rectification
Transforms angled camera captures into flat, crisp rectangular documents.
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3 Document Filters
Magic Color, Greyscale, and High-Contrast B&W remove uneven shadows.
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Multi-Page Compilation
Combine multiple pages, receipts, or invoices into one shareable PDF.
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Offline OCR Extraction
Extract searchable, editable text directly on your device memory.
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Zero Cloud Telemetry
Your confidential documents, contracts, and financial receipts never leave your device.
🔬 How Document Processing Works
Optical Processing & PDF Conversion Pipeline
Understand how our on-device computer vision engine processes and enhances your physical documents in real-time.
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Quadrilateral Homography Warp
The perspective distortion algorithm maps the 4-point quadrilateral to a standard rectangular canvas (A4, Letter, or Legal size), correcting keystoning and skew angles.
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Adaptive Histogram Equalization
Optical contrast filters normalize uneven lighting, whiten background paper noise, sharpen typed typography, and compile clean compressed PDF streams.
🎨 Document Filter Modes
Choosing the Right Filter for Your Documents
| Filter Mode | Image Processing Algorithm | Ideal Document Types | Output File Size |
|---|---|---|---|
| Magic Color | Adaptive saturation & luminance balancing | Color brochures, illustrated contracts, color identity cards, certificates | Moderate (Balanced quality & size) |
| Greyscale | Luminance weighting (0.299R + 0.587G + 0.114B) | Medical records, book pages, printed forms, faded receipts | Compact (30% smaller than color) |
| Black & White (B&W) | Adaptive threshold binary binarization | Printed contracts, handwritten notes, whiteboards, invoices | Ultra-compact (Smallest file size) |
| Original Photo | Raw sensor capture without color transformation | Passports, art prints, photos for archiving | Standard high-resolution JPEG |
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Start Scanning Documents to PDF Today
No separate expensive scanner app needed. Get complete QR and PDF scanning in one free app.