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Auto-generate WordPress blog posts from Reddit RSS with Groq AI & Pexels images

Ranjan KumarRanjan Kumar
1796 views
2/3/2026
Conditional LogicLead ManagementWebhookSalesforceCRM
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Who’s it for

This template is ideal for creators, bloggers, and automation enthusiasts who want to auto-generate blog posts from AI-generated content — without lifting a finger. Whether you're running a tech blog, AI newsletter, or just want to keep your WordPress site fresh, this workflow does the heavy lifting.

How it works

This n8n workflow automatically publishes WordPress posts using trending content from Reddit RSS feeds (like /r/artificial and /r/MachineLearning), enhanced with AI writing and royalty-free images.

  1. RSS Feed Trigger: Fetches new Reddit posts every minute from multiple AI-related subreddits.
  2. AI Blog Writer: Uses an LLM (Groq / GPT-4o) to convert Reddit titles + content into a full blog article (title, content, category, tags, image keyword).
  3. Image Generator: Queries the Pexels API using the keyword provided by the AI to fetch a relevant blog image.
  4. Category & Tag Manager: Automatically creates or reuses categories and tags in WordPress.
  5. WordPress Publisher: Posts the article in draft or published form — complete with featured image and metadata.

Everything is dynamically generated — no hardcoded text or API keys!

How to set up

Estimated time: 15–20 minutes

You’ll need:

  • 🧠 Groq or OpenAI API key (for AI article generation)
  • 🖼️ Pexels API key (for fetching featured images)
  • 📰 WordPress API credentials (with media + post permissions)

Customization via Sticky Notes:

  • Choose your own RSS feeds (or subreddit URLs)
  • Modify the AI prompt to match your writing style
  • Set post status (draft or publish)
  • Add your WordPress API URL and credentials

Requirements

  • Free n8n account (or self-hosted instance)

  • API credentials (Groq/OpenAI, Pexels, WordPress)

  • Working WordPress site with REST API access

  • Sticky notes explaining:

    • Setup instructions
    • AI prompt format
    • Required credential names

Auto-Generate WordPress Blog Posts from Reddit RSS with Groq AI & Pexels Images

This n8n workflow automates the creation of engaging WordPress blog posts by leveraging trending content from Reddit RSS feeds, generating unique article content with Groq AI, and enriching posts with relevant images from Pexels.

What it does

This workflow simplifies and automates the process of generating blog posts, making it ideal for content creators, marketers, or anyone looking to regularly populate their WordPress site with fresh, AI-powered content.

  1. Triggers on new Reddit RSS items: It starts by monitoring a specified Reddit RSS feed for new entries.
  2. Filters out irrelevant posts: It checks if the Reddit post title contains a specific keyword ("AI" in this case) to ensure relevance.
  3. Generates blog post content with Groq AI: For each relevant Reddit post, it uses the Groq Chat Model to generate a full blog post, including a title, introduction, main body, and conclusion, based on the Reddit post's title and a defined prompt.
  4. Searches for a relevant image on Pexels: It then uses the generated blog post title to search for a suitable image on Pexels.
  5. Constructs the WordPress post: It combines the AI-generated content and the Pexels image URL into a structured format.
  6. Publishes to WordPress: Finally, it creates a new post on your WordPress site with the AI-generated content and the Pexels image.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • WordPress Account: Access to a WordPress site with API enabled.
  • Groq API Key: An API key for the Groq AI service.
  • Pexels API Key: An API key for the Pexels API.
  • Reddit RSS Feed URL: The URL of the Reddit RSS feed you wish to monitor (e.g., https://www.reddit.com/r/artificial/top/.rss?t=day).

Setup/Usage

  1. Import the workflow: Download the JSON provided and import it into your n8n instance.
  2. Configure Credentials:
    • WordPress: Set up your WordPress credential with your website URL, username, and application password.
    • Groq Chat Model: Configure your Groq API key credential.
    • Pexels: Configure your Pexels API key credential.
  3. Customize Nodes:
    • RSS Feed Trigger (Node ID: 1227): Update the "RSS Feed URL" to your desired Reddit RSS feed.
    • Filter (Node ID: 844): Adjust the "Value 2" in the condition if you want to filter for different keywords in the Reddit post titles.
    • Groq Chat Model (Node ID: 1263): Review and modify the "System Message" and "User Message" in the "Groq Chat Model" node to refine the AI's content generation style and requirements.
    • HTTP Request (Node ID: 19): This node is configured for Pexels. Ensure the API key and search query are correctly mapped. You might need to adjust the query if you want to search for images differently.
    • Edit Fields (Set) (Node ID: 38): This node prepares the data for WordPress. Ensure the fields title, content, and featured_media_url are correctly mapped from the previous nodes.
    • WordPress (Node ID: 118): Verify that the "Resource" is set to "Post" and the "Operation" to "Create". Ensure the "Title", "Content", and "Featured Media" fields are correctly mapped from the "Edit Fields" node.
  4. Activate the workflow: Once configured, activate the workflow to start monitoring the RSS feed and generating posts.

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