Audit multi-page CRO with GPT-4o-mini, Google Sheets, and Gmail alerts

Description

Submit up to 3 landing page URLs using a simple form and the workflow audits each one automatically. For every page, GPT-4o-mini scrapes the content, scores it across five dimensions, identifies the top conversion issue, and generates five specific page fixes. Every result is logged to Google Sheets and pages that score below your alert threshold trigger an automatic Gmail alert with the full breakdown. Built for marketing managers, agency owners, and growth teams who need structured, repeatable conversion audits without spending hours reviewing pages manually.

---

What This Workflow Does

- Scrapes and cleans each page automatically — Fetches the raw HTML for every URL submitted, strips all scripts and styles, and prepares clean text for AI analysis - Scores pages across five CRO dimensions — GPT-4o-mini rates each page on overall conversion potential, CTA strength, trust score, and message clarity on a 1–10 scale - Generates a letter grade per page — Assigns A+ through F based on the overall score so you can rank pages at a glance - Produces five page-specific fixes — Every fix references actual content from the page and is scoped to be doable within 1–2 days — no generic advice - Runs each page independently — All three pages are processed as separate audits so one slow page never blocks the others - Logs every audit to Google Sheets — Appends a 14-column row per page with all scores, top issue, quick win, fix list, and priority label - Sends Gmail alerts only for low-scoring pages — Pages below your score threshold get an immediate email with the full audit breakdown — pages that pass trigger no email

---

Setup Requirements

Tools Needed - n8n instance (self-hosted or cloud) - OpenAI account with GPT-4o-mini API access - Google Sheets (one sheet with a tab named CRO Audit Dashboard) - Gmail account (the account you want alerts sent from)