Generate Images with Pollinations & Blog Articles with Gemini 2.5 from Telegram
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Fahmi Oktafian
Description
This n8n workflow is a Telegram bot that allows users to either:
Generate AI images using Pollinations API, or
Generate blog articles using Gemini AI
Users simply type image your prompt or blog your title, and the bot responds with either an AI-generated image or article.
Who's it for
This template is ideal for:
Content creators and marketers who want to generate visual and written content quickly
Telegram bot developers looking for real-world AI integration
Educators or students automating content workflows
Anyone managing content pipelines using Google Sheets
What it does / How it works
Telegram Interaction
Trigger Telegram Message: Listens for new messages or button clicks via Telegram
Classify Telegram Input: JavaScript logic to classify input as /start, /help, normal text, or callback
Switch Input Type: Directs the flow based on the classification
Menu & Help
Send Main Menu to User: Shows "Generate Image", "Blog Article", "Help" options
Switch Callback Selection: Routes based on button pressed (image, blog, or help)
Send Help Instructions: Sends markdown instructions on how to use the bot
Input Validation
Validate Command Format: Ensures input starts with image or blog
Notify Invalid Input Format: If validation fails, informs user of correct format
Image Generator
Prompt User for Image Description
→ When user clicks Generate Image
Detect Text-Based Input Type
→ Detects if text is image or blog
Switch Text Command Type
→ Directs whether to generate image or article
Show Typing for Image Generation
→ Sends "uploading photo..." typing status
Build Image Generation URL
→ Constructs Pollinations API image URL from prompt
Download AI Image
→ Makes HTTP request to get the image
Send Image Result to Telegram
→ Sends image to user via Telegram
Log Image Prompt to Google Sheets
→ Logs prompt, image URL, date, and user ID
Upload Image to Google Drive
→ Saves image to Google Drive folder
Blog Article Generator
Prompt User for Blog Title
→ When user clicks Blog Article
Store Blog Prompt
→ Saves prompt for later use
Log Blog Prompt to Google Sheets
→ Writes title + user ID to Google Sheets
Send Article Style Options
→ Offers: Formal, Casual, or News style
Store Selected Article Style
→ Updates row with chosen style in Google Sheets
Fetch Last User Prompt
→ Finds the latest prompt submitted by this user
Extract Last Blog Prompt
→ Extracts row for use in AI request
Gemini Chat Wrapper
→ Handles input into LangChain node for AI processing
Generate Article with Gemini
→ Calls Gemini to create 3-paragraph blog post
Parse Gemini Response
→ Parses JSON string to extract title and content
Send Article to Telegram
→ Sends blog article result back to user
Log Final Article to Google Sheets
→ Updates row with final content and timestamp
Requirements
Telegram bot (via @BotFather)
Pollinations API (free and public endpoint)
Google Sheets & Drive (OAuth credential setup in n8n)
Google Gemini / PaLM API key via LangChain
Self-hosted or cloud n8n setup
Setup Instructions
Clone the workflow and import it into your n8n instance
Set credentials:
Telegram API
Google Sheets OAuth
Google Drive OAuth
Gemini (via LangChain)
Replace:
Sheet ID with your own Google Sheet
Folder ID on Google Drive
chat_id placeholders if needed (use expressions instead)
Deploy and send /start in your Telegram bot
🔧 Customization Tips
Edit the Gemini prompt to adjust article length or tone
Add extra style buttons like "SEO", "Story", "Academic"
Add image post-processing (e.g. compression, renaming)
Add error catching logic (e.g. if Pollinations image fails)
Store images with filenames based on timestamp/user
Security Considerations
Use n8n credentials for all tokens (Telegram, Gemini, Sheets, Drive)
Never hardcode your token inside HTTP nodes
Do not expose real Google Sheet or Drive links in shared version
Use Set node to collect all editable variables (like folder ID, sheet name)