n8n Security Audit Workflow: OpenAI + Gotenberg + Outlook

Secure your landing pages with an automated security audit + PDF report

This n8n workflow takes a landing page URL from your form, analyzes its HTTP response headers and page content with OpenAI (GPT-4.1), generates a branded HTML/PDF security report using Gotenberg, and emails the results via Microsoft Outlook.

What this workflow does

• Collects input: receives a landing page URL submitted through an n8n form trigger.
• Fetches page + headers: uses an HTTP Request to retrieve the page HTML and the full HTTP response headers, following redirects.
• Audits headers with OpenAI: sends the response headers to GPT-4.1 to assess client-side security header configuration, cookie issues, and related security misconfigurations.
• Audits client-side content with OpenAI: sends the page HTML/content to GPT-4.1 to identify client-side vulnerabilities, potential information leakage, and weaknesses.
• Aggregates findings: merges and aggregates audit outputs, extracts and scores key security headers, and computes summary metrics (e.g., header grade and warning counts).
• Generates remediation guidance: uses GPT-4.1 to produce platform-specific fix steps for WordPress, GoDaddy Hosting, Hostinger Hosting, and Squarespace.
• Creates a report + sends it: builds a branded HTML report, converts it to a PDF via a Gotenberg HTTP endpoint, and emails the PDF (plus summary HTML) through Microsoft Outlook.

Use cases

• Turn landing page submissions into an instant security audit workflow for your SaaS or agency.
• Continuously review security header configuration and reduce client-side exposure across marketing sites.
• Provide actionable, platform-specific remediation steps to non-technical stakeholders via email reports.

Technical details

• Nodes / building blocks: Code, Merge, Aggregate, Sticky Note, Form Trigger, HTTP Request.
• AI analysis: OpenAI (GPT-4.1) for header audit, content audit, and remediation instructions.
• PDF generation: Gotenberg HTTP endpoint with HTTP Basic Auth credentials.
• Email delivery: Microsoft Outlook with Outlook credentials.