📱 Generate multi-platform social captions from blog posts with OpenAI
⚡ 27 views · 📱 Social Media & Email Marketing
Description
Quick overview
This workflow collects a blog URL or pasted blog text via an n8n form, uses OpenAI to generate platform-specific social captions and image alt text, and returns a styled copy-and-paste HTML results page with one section per social network.
How it works
- Receives blog input (URL or pasted content) and an optional featured image URL from an n8n form.
- If a blog URL is provided, downloads the page with an HTTP request and extracts readable article text from the HTML; otherwise it uses the pasted blog content.
- Builds a single prompt that asks for platform-specific captions (including a Twitter/X thread) and featured image alt text, returned as strict JSON.
- Sends the prompt to OpenAI Chat Model (via an AI agent) to generate the captions JSON.
- Converts the JSON into a styled HTML page with copy buttons for each caption and displays it back to the form submission as the response.
Setup
- Add an OpenAI API credential to the OpenAI Chat Model node and choose the model you want to use.
- Activate the workflow and open the Blog Input Form production URL to submit a blog URL or pasted blog text.
- Ensure the blog page is publicly accessible if you use the URL option, and optionally provide a featured image URL for Instagram/Pinterest guidance and alt text display.
🔗 Nodes Used
HTTP Request, AI Agent, OpenAI Chat Model, n8n Form Trigger, n8n Form
📥 Import
Download workflow.json and import into n8n:
Workflow menu → Import from File