n8n — Visual Automation
Learn how n8n connects your apps and automates workflows without code — and why power users swear by it over Zapier.
What Is n8n?
n8n (pronounced "n-eight-n") is an open-source workflow automation tool. It lets you connect apps, services, and APIs to automate repetitive tasks — all through a visual drag-and-drop interface. Think of it as a digital assembly line for your data.
Unlike tools like Zapier or Make, n8n is free and self-hostable. You can run it on your own server, which means full control over your data and no per-task pricing. That is why developers and technical teams love it.
Zapier / Make
- ✗ Subscription-based pricing with task limits
- ✗ Closed source, data goes through their servers
- ✗ Limited customization for complex workflows
- ✗ Less transparent about what happens under the hood
n8n
- ✓ Free and open source
- ✓ Self-host on your own infrastructure
- ✓ Full Python and JavaScript code support in workflows
- ✓ 400+ integrations, growing
Why Automation Changes Everything
Every business has repetitive tasks: syncing data between apps, sending notifications, processing form submissions, generating reports. Doing these manually costs hours every week. n8n automates them so you only act when something needs your attention.
For developers, n8n fills the gap between no-code tools (too rigid) and custom code (too much work). You get a visual interface for most workflows, but can drop in custom JavaScript or Python whenever you need logic beyond what the nodes provide.
Key Insight
n8n is particularly popular among AI enthusiasts because it pairs naturally with LLMs. You can build workflows that trigger on events, feed data to an AI, and have the AI take actions — all without writing a full application. It is the quickest path from idea to running automation.
The Building Blocks
Every n8n workflow is made of nodes. Each node does one thing: read data, transform it, make a decision, or send data somewhere. You connect them by dragging lines between their input and output ports.
Triggers
Start a workflow — on a schedule (cron), when a webhook is called, when a new email arrives, when a form is submitted. Every workflow starts with a trigger.
Nodes
Individual operations: HTTP Request, Google Sheets, OpenAI, Slack, Discord, Telegram, RSS, Database queries. There are over 400 built-in.
AI Nodes
Dedicated nodes for LLM tasks — prompt templates, chat models, vector stores. Pair these with any other nodes to build AI-powered automations.
# A simple n8n workflow:
Schedule Trigger (every hour)
→ HTTP Request (fetch new leads)
→ IF (score > 80?)
→ OpenAI (personalize email)
→ Gmail (send to prospect)
→ ELSE
→ Discord (notify sales team)A Real AI Workflow
Imagine you want to summarize every new article from an RSS feed and post the summary to Slack. With n8n, this takes about 10 minutes to build and runs automatically.
Pro Tip
n8n has an AI Agent node that lets you combine LLMs with tool use — similar to LangChain agents — inside a visual workflow. You get the power of an agent with the simplicity of n8n's node-and-edge interface.
Knowledge Check
Test what you learned about n8n.
3 Questions
What makes n8n different from Zapier from a pricing perspective?
What is the basic building block of every n8n workflow?
What triggers an n8n workflow?