How to Build a Chatbot for Your Website Free

Published May 2026

An AI chatbot on your website answers questions 24/7, captures leads, and reduces support tickets. Here are three ways to build one for free.

Option 1: n8n + OpenAI (Most Flexible)

Build a custom chatbot using n8n workflows. The frontend is a simple HTML widget. The backend runs on your VPS.

Cost: $0 (self-hosted n8n + OpenAI API, ~$0.01/conversation)
Pros: Full control, custom logic, connects to your database
Cons: Requires technical setup

Option 2: Botpress (Best Free Platform)

Botpress is an open-source chatbot platform with a visual builder. The free self-hosted version has no message limits. Pre-built integrations for Slack, Messenger, and web.

Cost: $0 (self-hosted)
Pros: No-code builder, NLU engine, customizable

Option 3: Voiceflow (Best for Voice + Chat)

Voiceflow started as a voice app builder but now supports web chat. The free tier includes 1,000 interactions per month. Beautiful conversation design tools.

Cost: Free (1,000 interactions/mo)

What Your Chatbot Should Do

Answer FAQ (pricing, features, hours)
Capture lead information (name, email, interest)
Route complex questions to a human
Book meetings via Calendly integration
Recommend products based on user input

Adding Chatbot to Your Site

All platforms provide an embed script. Add it before the closing </body> tag:

<script src="https://cdn.botpress.cloud/webchat/v1/inject.js"></script>

Customize colors, avatar, and welcome message to match your brand.

Training Your Chatbot

Upload your FAQ page as training data
Add 50-100 example Q&A pairs
Connect to your knowledge base or Notion wiki
Review failed conversations weekly and retrain

A well-trained chatbot resolves 70% of support inquiries before a human is needed. That translates directly to saved wages.