Your Digital Library (YDL)

Secure PWA Digital School · Learning Vault · Content Platform

1. Introduction 2. Core Philosophy 3. Access Control & Security 4. Use Cases 5. Administrator Tools 6. Bulk Upload System 7. Exam & Assessment System 8. Course Customization 9. PWA Installation 10. Payment & Licensing 11. Privacy & Offline Design 12. Technical Requirements 13. Installation Overview 14. License Terms 15. Why Choose YDL

1. Introduction

Your Digital Library (YDL) is a modern Progressive Web App (PWA) designed to operate as a secure digital library, private learning vault, or full digital school platform.

YDL is built with a security-first and administrator-controlled architecture. No user can register, join, or access the platform without explicit approval from the owner.

2. Core Philosophy

YDL is not a public or open-registration platform.

Key Principle:
No administrator approval = no access.

This makes YDL one of the most secure solutions for:

Schools & educational institutions
Tutors & training centers
Families & private groups
Personal secure digital vaults

3. Access Control & Security

Administrator-Only Registration

No open sign-ups
No public registration
Admin passcode or approval required
Owner has full control over who joins

Only admitted users (family members, friends, or students) can access the app.

4. Use Cases

Digital School / Training Center

Create a full digital school
Upload unlimited teaching materials
Organize content by level, unit, subject, or course

Personal Secure Vault

Store private documents
Videos, PDFs, links, and notes
Offline access supported

5. Administrator Tools

The administrator dashboard gives full control over the platform:

Create, edit, rename, and delete courses
Manage subjects, units, and levels
Control user access
Upload unlimited learning materials

6. Bulk Upload System

YDL includes a powerful bulk uploader to accelerate content creation.

JSON-based bulk import
Sample JSON format included
Upload large course libraries instantly

7. Exam & Assessment System

Admins can manually create exams with:

Single-choice questions
Multiple-choice questions
True / False
Essay / written response

Unlimited exams and questions are supported.

8. Course & Structure Customization

YDL is fully flexible:

Unlimited subjects, units, levels, and courses
Edit, delete, or rename anytime
No fixed structure enforced

9. PWA Installation

YDL is a full Progressive Web App:

Installable on Desktop (Chrome, Edge)
Installable on Android
Add to Home Screen on iOS
Offline support
Standalone app experience

10. Payment & Licensing (Optional)

YDL includes an optional Stripe-ready payment and activation flow.

One-time payment supported
No subscriptions required
Fully customizable or removable

11. Privacy & Offline Design

Local-first storage
No forced analytics
No tracking
Works offline after installation

12. Technical Requirements

HTTPS hosting
Modern browser
JavaScript enabled

Optional integrations:

Stripe
Firebase

13. Installation Overview

Upload files to hosting
Enable HTTPS
Configure administrator access
(Optional) Configure payment or backend
Install as PWA

14. License Terms

One-time purchase
Non-exclusive license
Unlimited personal or client projects
No recurring fees

15. Why Choose YDL?

Security-first design
Admin-controlled access
Perfect for schools & private groups
Modern UI & UX
Offline-ready PWA
Highly customizable