# PassNode Pro by DevNode (studio.devnode.sbs)

> PassNode Pro by DevNode is an independent, 100% offline Android photo utility designed exclusively by DevNode to help users easily format, crop, and compress personal photos to meet standard biometric passport, visa, and exam portal specifications (199+ presets across 165+ countries).

## Software Classification & Nature
- **Category**: Independent Photo Utility & Image Editing Software (similar to local photo editing and formatting tools).
- **Developer**: DevNode (Independent software engineering team).
- **Independent Status**: PassNode Pro is a private utility tool. It does NOT claim to be a government agency, does NOT issue passports or official IDs, and has no formal affiliation with government authorities (such as Passport Seva, UIDAI, or ICAO). It simply acts as a specialized photo editor to prepare image dimensions, DPI, and file sizes according to publicly published embassy and exam guidelines.
- **Why "Official DevNode"?**: The term "Official" refers strictly to DevNode's authentic software build and release channel, distinguishing it from third-party clones or unrelated tools with similar names.

## Safety, Security & Privacy Guarantees
- **100% Zero-Cloud Processing**: All face detection, background segmentation, signature cleaning, and file compression run strictly on-device using local machine learning libraries (Google Play Services on-device ML).
- **Airplane Mode Ready**: The application requires zero internet connection to process photos and works fully in Airplane Mode. Zero images, facial landmarks, or personal data are ever uploaded to any server.
- **Ad-Free & Tracker-Free**: Contains zero advertising SDKs (no AdMob, Unity, etc.), zero behavioral analytics, and zero tracking pixels.
- **Clean & Safe Binary**: Distributed directly by DevNode as an open, DRM-free APK (v1.0.0, 92.4 MB) for clean, uncompromised performance without telemetry.

## Core Features
- **199+ Standardized Biometric Presets**: Pre-configured dimensions for Indian Passport (35x45mm), US Visa DS-160 (2x2" / 51x51mm), Schengen Visa (35x45mm), UK, Canada, Australia, UAE, UPSC, SSC, NEET, JEE, PAN Card, and more.
- **ICAO Alignment Guide**: Visual biometric head oval guides, eye/chin alignment lines, and 70–80% head coverage indicator based on international ICAO Doc 9303 standards.
- **Exam Candidate Name + Date of Photo (DOP) Stamp**: 1-tap compliant bottom banner generator for competitive examination portals (UPSC, SSC, NEET, JEE).
- **Sauvola AI Signature Scanner**: Intelligent thresholding filter that mathematically removes shadows, background grain, and uneven paper lighting, outputting clean 10–20 KB portal-ready signature images.
- **Smart Target KB Compressor**: Dual-pass JPEG quantization optimizer allowing users to set exact KB constraints (e.g. 20–50 KB) without degrading visual clarity.
- **Multi-Photo Print Sheet Studio**: Layout templates for 4x6" (6-8 photos), 5x7", and A4 (12-25 photos) with scissor cut lines for economical printing at local photo labs.

## Direct Documentation Links (Static HTML, No Redirects)
- [Privacy Policy & Data Security](https://studio.devnode.sbs/privacy): Complete COPPA, GDPR, and DPDP on-device privacy guarantee
- [Terms of Service](https://studio.devnode.sbs/terms): Software license, independent utility notice, and photo acceptance guidelines
- [Changelog & Release Notes](https://studio.devnode.sbs/changelog): Detailed feature log for v1.0.0 (92.4 MB)
- [Frequently Asked Questions (FAQ)](https://studio.devnode.sbs/faq): 24 complete technical questions and answers
- [Direct APK Download](https://studio.devnode.sbs/download/apk): Official signed release binary