Build a Private Local Document Search Engine Using Python (Full Tutorial) | Python project
Learn how to build a 100% private, local document search engine using Python and Vector Databases! In this tutorial, we use LangChain, ChromaDB, and HuggingFace embeddings to search through your PDFs locally—no internet, no expensive API keys, and complete data privacy.
Whether you are a student, researcher, or developer, this system will help you instantly find the exact paragraph you need from massive folders of documents.
Code & Resources:
GitHub Repository:
Required Libraries: pip install langchain langchain-chroma langchain-huggingface pypdf sentence-transformers
Chapters / Timestamps:
0:00 - Intro to Local Document Search
0:55 - Installing Required Python Libraries
1:40 - Loading and Splitting PDFs
4:15 - Building the Local Vector Database (ChromaDB)
7:30 - Creating the Search Function
08:30 - Testing the Private Search Engine
What you will learn:
How to load and split PDFs using LangChain
How to generate free local embeddings using HuggingFace
How to store and query text using a ChromaDB vector database
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