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Convert RSS feeds into LinkedIn & X posts with GPT-4o & AI images & approval

Abdellah HomraniAbdellah Homrani
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2/3/2026
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🚀 Overview

Stop letting your valuable blog content collect dust! This automation is your 24/7 content repurposing engine. It monitors any blog or news feed you choose. The moment a new article goes live, it instantly creates engaging, platform-aware posts for LinkedIn and X (Twitter), generates a custom image with AI, and packages it all up for your review. You get the final say with a simple approval email, ensuring your brand voice stays perfectly on point.

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😩 The Problem

You've invested hours writing the perfect blog post. But the work isn't over. Now you have to manually copy, paste, and rewrite that content for different social platforms. You need a professional tone for LinkedIn, something short and snappy for X, and you have to find or create visuals for both. This tedious, repetitive task drains your creative energy and leads to your social media presence becoming stale or inconsistent.

✨ The Solution

This workflow acts as your automated content marketing assistant, elegantly solving the problem. Here’s the magic in action:

  1. New Blog Post Detected: The workflow constantly watches a specific RSS feed (e.g., your company blog).
  2. AI Content Generation: When a new post appears, the AI (powered by OpenAI GPT-4o-mini) reads the article, performs a quick web search for context (via SerpAPI), and drafts optimized posts for LinkedIn and X. It also generates a brand-new image based on the article’s topic.
  3. Secure Image Hosting: The generated image is uploaded to your Imgbb account for a shareable link.
  4. Approval Workflow: A notification is sent directly to your email inbox with the generated text and image for review.
  5. One-Click Go-Live: If approved, the workflow automatically publishes the content to the correct social media profiles.

⚙️ Setup Instructions

What You'll Need

  • RSS Feed URL (e.g., https://yourwebsite.com/feed)
  • OpenAI API key (for content + image generation)
  • SerpAPI API key (optional, for extra context)
  • Imgbb API key (for image hosting)
  • Connected Accounts: Gmail, LinkedIn, and X (Twitter)

Steps

  1. Upload: Import the JSON file into n8n.

  2. Connect: Link your credentials for Gmail, LinkedIn, X, OpenAI, SerpAPI, and add Imgbb with “Header Auth.”

  3. Configure:

    • Add your RSS URL to the RSS Feed Trigger node.
    • Update the “Send To” field in both Gmail User for Approval nodes with your own email.

  4. Activate: Switch on the workflow and let automation handle the heavy lifting.

🎨 Customizations

  • Expand to More Networks: Duplicate an existing branch to add Facebook or Instagram.
  • Add Smart Filters: Only generate posts for articles containing specific keywords (e.g., “AI” or “Case Study”).

n8n Workflow: Convert RSS Feeds into LinkedIn/X Posts with GPT-4o, AI Images, and Approval

This n8n workflow automates the process of converting RSS feed items into engaging social media posts for LinkedIn and X (formerly Twitter). It leverages AI (GPT-4o) to generate creative content and AI images, incorporates a human approval step, and then publishes the approved content.

What it does

  1. Monitors RSS Feeds: Triggers when new items are published in a configured RSS feed.
  2. Extracts Content: Retrieves the title, description, and URL from the new RSS feed item.
  3. Generates Social Media Content (AI):
    • Uses an AI Agent with an OpenAI Chat Model (GPT-4o) and SerpAPI (Google Search) to craft compelling social media posts for LinkedIn and X.
    • The AI Agent is instructed to generate a LinkedIn post (including hashtags, emojis, and a call to action), an X post (short, concise, with hashtags and emojis), and a prompt for an AI image based on the article's content.
  4. Generates AI Image: Uses OpenAI's DALL-E to create an image based on the AI-generated prompt.
  5. Sends for Human Approval:
    • Compiles all generated content (LinkedIn post, X post, image URL, original article URL) into an email.
    • Sends this email to a specified recipient for review, including "Approve" and "Reject" links.
  6. Waits for Approval: Pauses the workflow until a human decision is received via the approval email.
  7. Conditionally Publishes:
    • If the post is approved:
      • Publishes the generated content to LinkedIn.
      • Publishes the generated content to X (formerly Twitter).
    • If the post is rejected:
      • The workflow terminates without publishing.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • RSS Feed URL: The URL of the RSS feed you wish to monitor.
  • OpenAI API Key: For GPT-4o (Chat Model) and DALL-E (Image Generation).
  • SerpAPI API Key: For the AI Agent to perform Google searches (optional, but recommended for better content generation).
  • Gmail Account: For sending approval emails.
  • LinkedIn Account: Configured as an n8n credential for publishing.
  • X (formerly Twitter) Account: Configured as an n8n credential for publishing.

Setup/Usage

  1. Import the Workflow: Download the provided JSON and import it into your n8n instance.
  2. Configure Credentials:
    • Add your OpenAI API Key credential for the "OpenAI Chat Model" and "OpenAI" nodes.
    • Add your SerpAPI API Key credential for the "SerpAPI" node.
    • Add your Gmail credential for the "Gmail" node.
    • Add your LinkedIn credential for the "LinkedIn" node.
    • Add your X (formerly Twitter) credential for the "X" node.
  3. Configure RSS Feed Trigger:
    • In the "RSS Feed Trigger" node, enter the URL of the RSS feed you want to monitor.
    • Set the desired "Interval" for checking the feed.
  4. Configure Approval Email:
    • In the "Gmail" node, specify the recipient email address(es) for approval.
    • Customize the email subject and body as needed, ensuring the "Approve" and "Reject" links are correctly formatted to trigger the "HTTP Request" node.
  5. Activate the Workflow: Once all configurations are complete, activate the workflow.

The workflow will now automatically monitor your RSS feed, generate social media content, request approval, and publish approved posts to LinkedIn and X.

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