Automate Your Accounting: PDF Invoice to JSON with LangChain
Automate Your Accounting: PDF Invoice to JSON with LangChain #python #coding #programming #ai Stop wasting time and money on expensive OCR software by building your own private invoice extraction tool with Python, LangChain, and Gemini 2.0 Flash. This Short shows you how to use PyPDF for text extraction and a recursive character splitter to bypass LLM context limits effortlessly. By implementing a local FAISS vector store, the app performs a targeted similarity search to find relevant invoice details like vendor and total amount. The core of the program is a structured prompt that forces the LLM to return only deterministic JSON data, making it easy to integrate into any database. With a fast Streamlit UI, you can transform messy PDF invoices into clean data in seconds for just a fraction of a cent per call.