Build a RAG AI Chatbot with PHP & JavaScript — No Vector Database Needed (Google Gemini File…

📰 Medium · RAG

Build a RAG AI chatbot using PHP and JavaScript without a vector database to answer questions from your own PDF/Markdown documents

intermediate Published 28 Apr 2026

Action Steps

Install PHP and required libraries to handle PDF and Markdown files
Use JavaScript to create a frontend interface for user input and chatbot output
Configure the RAG AI model to read and process documents
Integrate the PHP backend with the JavaScript frontend to enable chatbot functionality
Test the chatbot with sample documents and questions to fine-tune its performance

Who Needs to Know This

Developers and NLP engineers can benefit from this tutorial to create custom chatbots for specific document types, enhancing their team's productivity and knowledge sharing

Key Insight

💡 You can create a functional RAG AI chatbot without relying on a vector database, using PHP and JavaScript to process and answer questions from custom documents