Design and post LinkedIn content with AI captions and custom templates

This workflow leverages n8n to automate LinkedIn content creation from start to finish. Upload an image and quote through a web form, and get a professionally designed post with AI-generated captions, ready to publish in seconds.

Features

• Randomly selects from 6 professional design templates for visual variety
• Converts HTML designs to high-quality images (90-95% JPEG quality)
• Generates engaging captions using OpenAI's GPT models
• Built-in caption editor for customization before posting
• Direct publishing to LinkedIn profiles or company pages
• Auto-compresses images for optimal LinkedIn upload

Prerequisites

1. N8N Instance: A running n8n instance (cloud or self-hosted)
2. OpenAI API: Active account with API access for caption generation
3. LinkedIn Account: Profile or company page with API access
4. Image Conversion API: HTML CSS to Image account
5. Web Hosting: Platform to host the web form (Netlify, Vercel, or custom server)

Setup Instructions

1. Deploy Web Form

• Download the provided web form template
• Host on your preferred platform
• Copy both webhook URLs from your n8n workflow
• Update form's webhook endpoints with your n8n URLs

2. Configure Image Conversion

• Sign up at htmlcsstoimage.com
• Get your API credentials (User ID + API Key)
• Add to HTTP Request node as Basic Auth credentials

3. Connect OpenAI API

• Create API key at OpenAI Platform
• In the ChatGPT HTTP Request node, add Header parameter:
  • Key: Authorization
  • Value: Bearer YOUR_API_KEY
• Recommended model: gpt-4 or gpt-3.5-turbo

4. Authenticate LinkedIn

• Create LinkedIn OAuth2 credential in n8n
• Follow the authentication flow and grant required permissions
• Select the credential in the "Create a post" LinkedIn node
• Choose post destination (personal profile or company page)

5. Test the Workflow

• Submit test data through the web form
• Monitor n8n execution panel for successful completion
• Verify image generation, caption quality, and LinkedIn posting
• Adjust settings as needed based on results

Notes

• Processing time averages 10-20 seconds from upload to preview
• All 6 design templates are fully responsive and LinkedIn-optimized
• Caption editor allows full customization before publishing to LinkedIn

For questions or issues, please contact me for consulting and support : Linkedin.

🔗 Test with sample data first.

Access Web Form Template