PDF Invoice Data Extraction to MongoDB – Node.js & React with OpenAI

This item uses third-party AI services (such as OpenAI) which are not included in the purchase price. Buyers are responsible for providing their own API keys and covering any usage costs charged by these services. No AI credits, subscriptions, or usage fees are included with this item. A full-stack application for extracting structured data from invoices using OpenAI’s GPT models. Built with Node.js backend and React frontend, featuring multi-language support and automated database storage. Features

• AI-Powered Extraction: Uses OpenAI GPT-4o-mini for accurate invoice data extraction with structured JSON output
• Multi-Format Support: Processes text, PDF (using pdf-parse), and image files (using Tesseract.js OCR)
• Database Automation: Automatically stores extracted data in MongoDB with Mongoose ODM
• Multi-Language Support: Built-in internationalization with English and Spanish translations
• RESTful API: Clean API endpoints for invoice management with proper error handling
• Data Validation: Comprehensive validation service with fallbacks and data cleaning
• File Upload: Multi-file upload support (up to 5 files) with drag-and-drop interface
• Export Functionality: Export extracted data to Excel format
• Unit Testing: Comprehensive test coverage with Jest and Supertest
• Modern UI: React-based frontend with responsive design and Tailwind CSS
• Text Preprocessing: Intelligent text preprocessing to handle OCR artifacts and formatting issues

Tech Stack Backend

• Node.js with Express.js
• MongoDB with Mongoose ODM
• OpenAI API for data extraction
• JWT for authentication (optional)
• Jest & Supertest for testing

Frontend

• React with modern hooks
• Axios for API communication
• i18next for internationalization
• React Router for navigation
• Testing Library for component testing
• Tailwind CSS for styling
• XLSX for Excel export functionality

Architecture Overview Backend Architecture Data Flow

1. File Upload: User uploads invoice files (PDF, image, text)
2. Text Extraction: Files are processed using pdf-parse or Tesseract.js OCR
3. AI Processing: Extracted text is sent to OpenAI with structured prompts
4. Data Validation: AI response is validated and cleaned
5. Database Storage: Structured data is saved to MongoDB
6. Frontend Display: Data is displayed in a responsive table with export options

 

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• Instant access to all plugins and all themes including all future releases
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• Regular Updates as of when available. Usually, updates are released daily.
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(Only For WHMCS Category Products !)

• We Only provide WHMCS Module, how you can  nulled any module step only !
• Instant access to all plugins and all themes 
• Unlimited domain usage
• Regular Updates as of when available. Usually, updates are released daily.
• Before purchasing, please read the Terms and Conditions & Refund Policy.
• If you have any questions, please first read the FAQs.
• If you haven’t found the answer to your question, please contact us, and we will respond ASAP.
• Please note that any digital products on the website do not contain malicious code, viruses, or advertising. We buy the original files from the developers. We do not sell any products downloaded from other sites.