SEO JSON-LD Schema Auditor & Generator with GPT-4.1-mini + Gmail

This workflow automates the auditing and optimization of JSON-LD schema markup for SEO. Users submit a website URL and email address via a form or webhook. The workflow extracts existing JSON-LD from the site, analyzes it for gaps and improvements using GPT-4.1-mini via OpenRouter, and generates tailored, optimized schema markup. It then compiles a comprehensive before/after HTML guide with actionable implementation steps.

Key benefits include significant time savings for SEO professionals, improved search engine visibility through better structured data, and easy delivery of results via email. No manual coding or schema expertise required—AI handles the heavy lifting while ensuring compliance with Google's guidelines.

Ideal use cases: Digital marketers optimizing client sites, e-commerce owners enhancing product pages, bloggers boosting rich snippets, or agencies scaling SEO audits. Customizable prompts and email templates allow focus on specific schema types like Organization, Product, or FAQ. Prerequisites are minimal: n8n instance, Gmail credentials, and OpenRouter API key.