AI Blog Generator n8n Workflow: Gemini/OpenAI → WordPress HTML

Turn a draft into WordPress-ready AI blog HTML—automatically

This n8n workflow takes a webhook request containing your draft article and AI settings, then generates clean, WordPress-ready HTML using Google Gemini, OpenAI, and/or OpenRouter—along with SEO metadata, FAQs, and a WordPress-compatible cover image (base64) returned as JSON.

What this workflow does

• Receives a POST webhook with a title, article text, writing & image style instructions, optional existing data, and provider settings.
• Normalizes and prepares defaults, including category and image constraints, while determining whether the request is for a new post or a regeneration of a specific asset.
• Supports asset regeneration (image, excerpt, FAQ, or SEO JSON) by generating only the requested piece using a multi-provider fallback chain across Google Gemini, OpenAI, and OpenRouter.
• Generates full post content for new posts in a single JSON response: excerpt, FAQ items, a single category selection, and SEO fields.
• Rewrites your article into clean WordPress HTML (e.g., <p>, <h2>, <ul>, <strong>) while preserving meaning and applying your requested writing style.
• Creates a detailed image prompt and generates a cover image via Google Gemini (fallback to OpenAI), then returns the image as base64 formatted for WPBakery.

Use cases

• Automate blog publishing pipelines for SaaS teams: submit drafts via webhook, receive WordPress-ready HTML + SEO in one response.
• Regenerate only FAQs, excerpt, or SEO JSON when editing content—without reprocessing the full article.
• Build a consistent content workflow for n8n automation engineers and operators using reliable AI provider fallbacks.

Technical details

• Nodes: code, switch, webhook, sticky note, manual trigger, respond to webhook.
• AI providers: Google Gemini, OpenAI, and OpenRouter (fallback chain).
• Outputs: assembled JSON including WordPress HTML content, SEO metadata, FAQs, and a base64 cover image for WPBakery.