Extract verified company data from website Impressum pages with OpenAI

by Wolfgang Renner ✓ · 0 views · created 2026-10-12 · Document Extraction, AI Summarization

What this workflow does

This workflow has 12 nodes and runs when an HTTP POST request hits its webhook URL. It uses only n8n's built-in nodes. It also calls api.openai.com over HTTP.

How it runs

Trigger: When an HTTP POST request hits its webhook URL.

1. Validate Input (Code): runs custom JavaScript code
2. Input Valid? (If): checks a condition and branches into true / false
3. Fetch Homepage (HTTP Request): calls an HTTP API
4. Respond with Input Error (Respond to Webhook): sends the response back to the webhook caller
5. Find Impressum URL (Code): runs custom JavaScript code
6. Fetch Impressum Page (HTTP Request): calls an HTTP API
7. Clean Page Text (Code): runs custom JavaScript code
8. Page Has Content? (If): checks a condition and branches into true / false
9. Extract Company Data with AI (HTTP Request): calls api.openai.com (POST)
10. Verify Against Page Text (Code): runs custom JavaScript code

…plus 1 more step. See the full node list below.

HTTP calls to: api.openai.com

Before you upgrade to n8n 3.0

Nodes used (5)

• Webhookn8n-nodes-base.webhook
• Coden8n-nodes-base.code
• Ifn8n-nodes-base.if
• Respond to Webhookn8n-nodes-base.respondToWebhook
• HTTP Requestn8n-nodes-base.httpRequest

From the author

Quick Overview This webhook-based workflow takes a website URL, finds and fetches the site’s Impressum/imprint page, extracts structured company details with OpenAI, verifies each value against the page text, and returns a JSON response with the verified…

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