About QR Code & PDF Scanner Pro
QR Code & PDF Scanner Pro is developed by SHREYA APPS, an independent mobile software engineering studio dedicated to creating high-performance, privacy-centric utility applications for Android users worldwide.
Our Core Engineering Mission
In an ecosystem crowded with bloated utility apps laden with subscription traps and intrusive data telemetry, our mission is simple: provide an ultra-fast, 100% free, all-in-one optical toolkit that respects your privacy.
- Zero Data Monetization: We never sell, track, or aggregate your scan history, camera feeds, or personal documents.
- On-Device First: Every optical character recognition (OCR) model and barcode decoding algorithm runs locally in device RAM.
- Lightweight Footprint: Engineered with minimal battery drain and optimized binary sizes under 15MB.
Technology Architecture & Standards
Our applications adhere to international optical coding standards established by ISO/IEC, including ISO/IEC 18004 (QR Code Matrix) and ISO/IEC 15424 (Data Matrix Symbology). The PDF document compiler produces standard ISO 32000-compliant document streams readable across any operating system or viewer software.
App Development Milestones
| Version Milestone | Release Highlight | Architecture Advancement |
|---|---|---|
| v1.0 (Initial) | Instant Camera QR Scanner | 0.4s real-time camera decoding loop |
| v2.0 (Expansion) | Multi-Format Barcode Engine | Support for 15+ 1D/2D linear and matrix barcodes |
| v3.0 (Productivity) | PDF Document Digitizer | Edge Canny detection + homography warp algorithms |
| v4.0+ (Current) | Offline OCR & Custom Generator | Local machine learning text extraction and vector QR exporter |
Contact Our Engineering Team
Have suggestions, format requests, or feedback? We review all user correspondence directly. Reach out via email at support@qrscannerproapp.com or visit our Contact Us page.