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Changelog

[2.4.5] - 2026-01-16

  • Fixed GUI layout bug where pagination controls covered the search box
  • Added window resizing support (minimize/maximize buttons now functional)
  • Fixed search re-execution issue where subsequent searches would fail
  • Implemented comprehensive OCR timeout prevention system:
    • Increased OCR timeout from 30 to 360 seconds for complex images
    • Added aggressive image optimization (resize to 1000×1000, grayscale, contrast enhancement)
    • Implemented pre-processing skip for very large images (>9 megapixels)
    • Added faster Tesseract configuration (LSTM engine, optimized segmentation)
    • Added detailed OCR timing and size logging for performance monitoring
  • Improved search state management with thread-safe flag to prevent concurrent searches
  • Enhanced pagination controls visibility in search results

[2.4.4] - 2025-05-16

  • Significantly enhanced search results pagination with a dedicated navigation panel
  • Added First and Last page buttons for easier navigation through large result sets
  • Implemented dynamic button state management based on current page
  • Added clear visual indicators showing total results and current viewing range
  • Improved column headers to display result count information
  • Enhanced status bar with more detailed search information

[2.4.3] - 2025-05-16

  • Fixed Tesseract OCR process failure by redesigning temporary file management
  • Fixed application continuing to run after closure by implementing proper thread management
  • Added daemon threads to ensure background processes terminate when the application exits
  • Implemented window close handler with resource cleanup
  • Enhanced error handling and cleanup in the main application loop
  • Improved search results pagination with better visibility and increased results per page
  • Enhanced status bar to clearly indicate pagination information for large result sets

[2.4.2] - 2025-05-16

  • Fixed FTS5 search query to use correct column names
  • Corrected snippet function parameters for better search result highlighting

[2.4.1] - 2025-05-16

  • Fixed database utility functions for better backward compatibility
  • Corrected cache module imports to use proper class names
  • Improved error handling in database operations
  • Enhanced code maintainability with proper delegation patterns

[2.4.0] - 2025-05-16

  • Implemented PDF annotations support
  • Added document similarity search using TF-IDF and cosine similarity
  • Enhanced database schema with annotations table
  • Added document clustering functionality

[2.3.0] - 2025-05-16

  • Implemented document categorization and tagging system
  • Enhanced database schema with tags and categories tables
  • Optimized FTS5 search with porter stemming and prefix matching
  • Improved caching system with memory-aware LRU cache
  • Added time-based cache expiration for better resource management
  • Enhanced security with secure temporary file handling
  • Improved input validation for all user inputs
  • Added comprehensive docstrings and type hints throughout the codebase

[2.2.1] - 2025-05-15

  • Enhanced run_pdf_search.py with improved database setup, error handling, and command-line options
  • Updated README with comprehensive documentation and improved installation instructions
  • Added copyright headers to all source files

[2.0.0] - 2025-05-10

  • Added caching system with LRUCache and DiskCache for efficient data storage
  • Implemented memory management utilities for handling large PDFs
  • Enhanced security with input validation and sanitization functions
  • Added pagination for search results
  • Enhanced database with full-text search capabilities and improved indexing
  • Improved error handling and logging throughout the application

[1.2.0] - 2025-05-05

  • Removed EasyOCR support in favor of Tesseract OCR for better compatibility
  • Streamlined OCR processing with improved architecture
  • Updated package versions in requirements.txt for improved compatibility and performance

[1.1.0] - 2025-05-03

  • Improved PDF processor architecture with OOP structure
  • Added type hints and comprehensive documentation
  • Enhanced resource management with context managers
  • Optimized database operations
  • Used pathlib for cross-platform path handling
  • Added PDFMetadata dataclass for better data structure

[1.0.0] - 2025-05-01

  • Initial release
  • Support for PDF text extraction
  • Support for OCR using Tesseract and EasyOCR
  • Basic search functionality
  • SQLite database for storing extracted text

[0.9.0] - 2024-10-31

  • Improved PDF processor architecture and error handling
  • Enhanced code structure with better organization

[0.8.0] - 2024-10-24

  • Added support for EasyOCR as an alternative to Tesseract for OCR processing
  • Fixed image processing with NumPy array conversion for EasyOCR compatibility
  • Updated required modules and dependencies

[0.7.0] - 2024-10-23

  • Added MIT License
  • Updated README with improved documentation
  • Refactored code for better maintainability

[0.6.0] - 2024-10-16

  • Various enhancements to core functionality

[0.5.0] - 2024-10-04

  • Updated code and removed unused components
  • Improved code organization

[0.4.0] - 2024-10-03

  • Enhanced search functionality with more precise keyword matching using regular expressions
  • Added multithreading for database search operations
  • Implemented zoom control for PDF preview
  • Added page navigation with Next and Previous buttons
  • Improved error handling with UI feedback and logging
  • Enhanced UI layout with expandable TreeView and canvas
  • Integrated PDF rendering directly on the main window

[0.3.0] - 2024-10-03

  • Updated README to reflect new features and improvements

[0.2.0] - 2024-09-30

  • Added requirements.txt file
  • Updated .gitignore file

[0.1.0] - 2024-09-30

  • Initial commit
  • Basic PDF processing functionality