# Product Context

## Purpose
DocuLens is a unified web application that combines Optical Character Recognition (OCR) and Artificial Intelligence (AI) to process and translate documents. It aims to provide an intuitive interface with real-time feedback for document processing tasks.

## Problems Solved
1. Complex document processing made simple through a unified interface
2. Multiple processing modes to handle different use cases:
   - Basic OCR (Tesseract only)
   - Enhanced OCR (Tesseract + AI correction)
   - Full AI OCR processing
3. Document translation with support for multiple languages
4. Real-time progress tracking with visual feedback

## How It Works
1. File Management:
   - Supports PDF and image uploads
   - Automatic file naming to prevent overwrites
   - Bulk file management capabilities

2. Processing Modes:
   - OCR Mode: Uses Tesseract for text extraction
   - OCR + AI Mode: Combines Tesseract with AI correction
   - AI Mode: Full AI-powered OCR processing

3. Translation Features:
   - Page-by-page translation
   - Support for processed or new files
   - Progress tracking
   - Outputs translated text with page markers

4. Configuration System:
   - AI model management
   - Custom prompt configuration
   - Language settings
   - Import/export of configurations