You have a website. You want an AI assistant on it that answers customer questions — without rebuilding the site, without a monthly SaaS subscription, and without the bot inventing refund policies you never wrote.

This guide shows the three ways to add a chatbot to an existing site, from zero-code to fully embedded, including a copy-paste floating chat bubble that works on WordPress, Shopify, plain HTML, React — anything that lets you add a snippet.

One thing before the how: the bot itself. A chatbot for a business must answer only from your real content — your FAQ, policies, product docs — and admit when it doesn't know. That's called RAG (Retrieval-Augmented Generation), and I wrote a full free tutorial on building one and hosting it at a public URL for ₹0: Build a Free AI Support Chatbot with FastAPI, Groq, and Vercel .…