PseudoRun - IGCSE Pseudocode Editor

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

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

• 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

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!