Stop Wasting Time: Auto-Spin Blog Posts into LinkedIn Carousels with AI

Instant LinkedIn Carousels: Turn Blog Posts into Slide PDFs, Hands Off

Tired of manually chopping up blog posts into LinkedIn carousels? There’s a better way. With open, low-code automation tools and AI, you can trigger a workflow that turns any new blog post into a polished, ready-to-upload LinkedIn carousel PDF, automatically. Here’s how to do it (and what to watch for).

What You Need

• Blog with RSS feed or webhook (WordPress, Ghost, Medium, etc.)

• n8n (free, open-source automation)

• OpenAI or Claude API for AI summarization

• Canva or Bannerbear API for image + slide generation

• Google Slides or PDF export capability (optional, for custom slides)

• Email or Slack for notifications

• LinkedIn account

Step 1: Trigger When a Blog Post Publishes

• Connect RSS/Webhook to n8n: RSS Feed: Use the RSS Feed Read node. Paste your blog’s feed URL.

• Webhook: Use the Webhook node and have your blog ping it when publishing.

Gotcha: Your RSS feed should provide full content, not just summaries.

Step 2: AI Summarize for Carousel Slides

• Summarize and chunk with AI: Use n8n’s HTTP Request node to call OpenAI/Claude API.

• Prompt: “Summarize this blog post into 6-8 concise, actionable points for a LinkedIn carousel. Suggest a catchy title and a final CTA.”

• Parse the output into an array for slides.

Pro Tip: Test and tweak your prompt for style and brevity.

Step 3: Generate Slide Images and Layout

• Create visuals and layouts automatically: For each point, send the text to an image generator (e.g., DALL·E, Canva API).

• Use a service like Bannerbear, Canva, or Google Slides via Make/Zapier to combine text and image per slide.

• Set branding colors and fonts in your template for instant consistency.

Gotcha: API rate limits and costs may apply. Add n8n error handling to retry or skip on failure.

Step 4: Assemble and Export PDF

• Export slides as a PDF: Automate this with your chosen slide/image tool: Canva/Bannerbear: Use the API to generate and export PDF.

• Google Slides: Use Make/Zapier to assemble slides and export as PDF.

• Save the PDF for the next step.

Pro Tip: Standardize your slide template for brand consistency and faster workflow.

Step 5: Notify or Deliver

• Send the carousel for review or upload: Email the PDF to your team or yourself.

• Send a Slack or Teams message with the PDF.

• (Advanced) Use browser automation (e.g., AuthoredUp, Taplio, or Bardeen) to upload to LinkedIn, as direct API upload is unsupported.

Gotcha: LinkedIn doesn’t allow direct PDF uploads via API, but browser-based automation or reminders work well.

Platform Comparison Table

Quick Copy-Paste: n8n AI Summarization Node

{
  "nodes": [
    {
      "parameters": {
        "url": "https://api.openai.com/v1/chat/completions",
        "method": "POST",
        "bodyParametersUi": {
          "parameter": [
            {"name": "model", "value": "gpt-4o"},
            {"name": "messages", "value": [
              {"role": "system", "content": "You are a LinkedIn carousel copy expert."},
              {"role": "user", "content": "Summarize this blog post for a LinkedIn carousel: [INSERT BLOG POST TEXT]. Output 6-8 concise, actionable slide texts, a catchy title, and a CTA."}
            ]}
          ]
        },
        "headersUi": {
          "parameter": [
            {"name": "Authorization", "value": "Bearer YOUR_OPENAI_KEY"}
          ]
        }
      },
      "name": "AI Summarize",
      "type": "n8n-nodes-base.httpRequest"
    }
  ]
}

Final Thoughts

Automating your LinkedIn carousel creation lets you publish consistently and focus on strategy, not slide design. Using n8n or Make, with the AI and design tools of your choice, you’ll keep your workflow agile and future-proof.

Give it a try, your next viral carousel could build itself while you sleep.