📚 Chat with Multiple PDFs

This project is a Streamlit-based application that allows users to upload multiple PDF files and interact with the content by asking questions. The app uses LangChain, OpenAI Embeddings, and FAISS to retrieve answers based on the content of the uploaded PDFs.

Features

• Upload multiple PDF documents and extract text for interactive queries.
• Split large text documents into manageable chunks for efficient processing.
• Utilize OpenAI Embeddings for semantic search across document content.
• Conversational interaction powered by ChatOpenAI and FAISS.
• Memory retention for ongoing conversation context.

Tech Stack

• Python
• Streamlit for UI and handling user inputs.
• PyPDF2 for extracting text from PDFs.
• LangChain for text processing and conversational AI.
• FAISS for vector-based document retrieval.
• OpenAI Embeddings for text vectorization.
• Dotenv for loading environment variables.

Installation

1. Clone this repository:

   git clone https://github.com/yourusername/multi-pdf-chat.git
   cd multi-pdf-chat

2. Install the dependencies:

   pip install -r requirements.txt

3. Create a .env file and add your OpenAI API key:

   OPENAI_API_KEY=your_openai_api_key

4. Run the Streamlit app:

   streamlit run app.py

How It Works

1. Upload PDFs: Users can upload multiple PDF files via the sidebar.
2. Text Extraction: The app uses PyPDF2 to extract text from the PDFs.
3. Text Chunking: The extracted text is split into chunks using CharacterTextSplitter for better processing.
4. Vector Store: The text chunks are embedded using OpenAIEmbeddings and stored in a FAISS vector store for fast retrieval.
5. Conversational Chain: A conversational retrieval chain is established, allowing users to ask questions, with responses based on the uploaded documents.

Usage

1. Upload PDF files from the sidebar.
2. Ask questions related to the content of the PDFs.
3. Receive responses based on the documents using the conversational retrieval chain.

SEE IT IN ACTION -> https://mutliple-pdfs-chatbot.streamlit.app

Folder Structure

📦multi-pdf-chat
 ┣ 📂htmlTemplates
 ┃ ┣ 📜bot_template.html
 ┃ ┣ 📜css.html
 ┃ ┗ 📜user_template.html
 ┣ 📜app.py
 ┣ 📜requirements.txt
 ┗ 📜README.md