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Audit on-page SEO of a landing page and email an AI-scored report

This workflow scrapes a landing page, runs two AI audits in parallel (technical + content/keyword) with GPT-5, calculates an overall score, generates a score chart, emails an HTML report, and logs every audit to Google Sheets. Course material to rebuild the workflow node by node, live.

Flow overview

Submit Audit Request (Form) → Configuration → Scrape Landing Page (HTTP) → Page Fetched Successfully? (IF)

• FALSE → Send Scrape Failure Email
• TRUE → [Technical SEO Audit + Content & Keyword SEO Audit] (parallel) → Combine Audits → Calculate Overall Score → Build Score Chart URL → [Compose HTML Report → Send Audit Report by Email] + [Log Audit to Google Sheets]

Prerequisites & credentials

• OpenAI account (openAiApi): API key from platform.openai.com, access to GPT-5 models.
• Gmail account (gmailOAuth2): Google OAuth2 connection in n8n.
• Google Sheets account (googleSheetsOAuth2Api): Google OAuth2 connection, plus a sheet created for the audit history (columns: audit_date, landing_page_url, target_keyword, technical_score, content_score, overall_score, recipient_email).

1. Submit Audit Request — n8n Form Trigger v2.6

Intake form fields:

• Landing Page URL (text, required)