Complete Offline Pseudocode Learning Environment PseudoRun is the ultimate educational tool for IGCSE and A-LEVELS Computer Science students, now available as a Firefox extension that works completely offline. This comprehensive pseudocode editor and simulator helps students master Cambridge programming concepts with professional features and an intuitive interface. Key Features 🔧 Professional Code Editor - CodeMirror 6 integration with advanced syntax highlighting - Real-time syntax validation with 500ms debounced error checking - Auto-save functionality with browser localStorage - Bracket matching, line numbers, and code folding - Multiple themes including light and dark modes 🎓 Educational Tools - 22 Built-in Example Programs covering the complete IGCSE syllabus - Interactive Tutorial with step-by-step learning modules - Comprehensive Syntax Reference with Cambridge pseudocode specifications - Practice Problems with varying difficulty levels - Exam Mode with customizable timer for test simulation 🐛 Advanced Debugging - Step-by-step execution with variable state visualization - Breakpoint functionality for code analysis - Watch variables and expression evaluation - Call stack tracking for procedure/function debugging - Runtime error detection with clear error messages 📊 Output and Visualization - Animated output display showing execution flow - Variable state monitoring during execution - Input handling for interactive programs - File I/O operations support (CREATE, OPEN, WRITE, CLOSE) - Trace table generation for algorithm analysis 💾 Local Program Management - Save unlimited programs in browser localStorage - Organized program library with search and categorization - Export/import programs as text files - Program duplication and versioning support - Local program sharing capabilities 📤 Export and Documentation - Export pseudocode as PDF with proper formatting - Generate DOCX documents for assignments - Create PNG images for presentations - Print-friendly formatting with line numbers - Customizable export themes and styles Complete Offline Functionality This extension operates entirely without internet connection: - ✅ No network requests - works anywhere, anytime - ✅ No authentication required - always in guest mode - ✅ Local data storage - all work saved on device - ✅ No data collection - complete privacy protection - ✅ Fast performance - no loading delays Educational Benefits For Students: - Master IGCSE pseudocode syntax and structure - Practice problem-solving skills with instant feedback - Prepare for exams with realistic simulation - Develop computational thinking and algorithm design - Build confidence in programming fundamentals For Teachers: - Demonstrate pseudocode concepts in class - Create custom exercises and examples - Monitor student progress offline - Generate teaching materials and examples - Facilitate collaborative learning activities Supported IGCSE Pseudocode Features Data Types and Variables: - INTEGER, REAL, BOOLEAN, STRING, CHAR types - Variable declaration and assignment - Array declaration and manipulation - Constant definitions Control Structures: - IF/THEN/ELSE conditional statements - FOR, WHILE, REPEAT loops - Nested control structures - Loop counters and iteration variables Procedures and Functions: - Procedure definition and calling - Function return values - Parameter passing (by value and reference) - Recursion support with depth limits Built-in Functions: - LENGTH() for string/array operations - SUBSTRING() for string manipulation - UCASE()/LCASE() for case conversion - INT()/REAL()/STRING() for type conversion - ROUND() for number rounding - RANDOM() for generating random numbers File Operations: - CREATE, OPEN, WRITE, CLOSE file commands - READ and SEEK operations - EOF detection - Error handling for file operations Output Operations: - OUTPUT and PRINT statements - Formatted output with spacing - New line control - Variable and expression output Technical Specifications

Firefox Compatibility: Version 142.0 and later
Manifest Version: 2 (Firefox optimized)
Storage: Browser localStorage (up to 10MB)
Performance: Optimized for offline execution
Security: No data collection or transmission
Size: Lightweight (under 600KB)
Language: TypeScript/React with CodeMirror 6

Installation and Usage

Install Extension: Click "Add to Firefox" or load via about:debugging
Open Editor: Click the PseudoRun icon in your Firefox toolbar
Start Coding: Write pseudocode with real-time syntax highlighting
Execute Programs: Click "Run" to see animated output execution
Learn and Practice: Access tutorial, examples, and practice problems
Save Work: Programs auto-save locally for continued learning

Perfect for Educational Institutions

Classroom Use: Works in computer labs without internet
Exam Environments: Reliable offline functionality
Student Assignments: Export and submit work easily
Curriculum Alignment: Covers Cambridge IGCSE Computer Science syllabus
Accessibility: Clean, simple interface suitable for all skill levels

Privacy and Security PseudoRun prioritizes student privacy and data security: - 🔒 Zero Data Collection - No analytics or tracking - 🔒 Local Storage Only - All data stays on device - 🔒 No Authentication - No account creation required - 🔒 Offline Operation - No network connectivity needed - 🔒 Open Source - Code is transparent and auditable Continuous Learning

Regular updates with new examples and features
Responsive developer support for educational institutions
Community-driven feature improvements
Alignment with curriculum updates and standards

Transform your Computer Science education with PseudoRun - The complete offline pseudocode learning environment for IGCSE and A-LEVELS success!