Summarize PDF documents in Telegram with Groq AI

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1. Workflow Overview

How It Works 9 nodes : Lightweight, efficient (no loops). Key Steps : 1. Triggers on Telegram messages downloads files. 2. Sub workflow splits text/files. (Optional but recommended) 3. IF node chec...

Best for

Document Extraction automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.set, n8n-nodes-base.extractfromfile, n8n-nodes-base.code, n8n-nodes-base.if, n8n-nodes-base.noop, n8n-nodes-base.stickynote, @n8n/n8n-nodes-langchain.chainllm, n8n-nodes-base.telegramtrigger

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by EoCi - Mr.Eo.

Original n8n.io source

1.1 Workflow description

Title: Summarize PDF documents in Telegram with Groq AI
Workflow name: Summarize PDF documents in Telegram with Groq AI

How It Works

Telegram Trigger → Sub-Workflow (Separate Text/Files) → IF (Is PDF?)
├── True: Extract PDF → Set Text → Code (Clean) → Done!
└── False: NoOp (Ignore)

9 nodes: Lightweight, efficient (no loops).
Key Steps:

Triggers on Telegram messages - downloads files.
Sub-workflow splits text/files. (Optional but recommended)
IF node checks MIME type/extension for PDFs.
Extracts text via "Extract From File" node.
AI writes summary.
Responds to user.

Setup Instructions

IMPORTANT : Requiring an n8n instance to be configured with public/production webhook !

Recommendation: Ngrok or Cloudflare Tunnel

Add the Telegram credential

Go to Credentials → New Credential → Telegram API.
Paste your Bot Token.

Configure the Trigger

Open the Telegram Trigger node.
Ensure Trigger On contains Message.
Enable Download under Additional Fields so file payloads are attached to the node output.

(Optional) Enable the sub‐workflow Automate Telegram Message Processing - Separate Text and Files 💬📁

If you need both message text and attachments, enable the Automate Telegram Message Processing – Separate Text and Files node and import the referenced workflow into your workspace.

Deploy the workflow and activate it.
Testing Send a message with a PDF attachment to your Telegram bot. There will be a response from the chat that summarizes the PDF content.

Nodes Used

Telegram Trigger: Listens for incoming messages and downloads attachments.
Execute Workflow: Calls a sub-workflow to separate text and file data (recommended for reliable file handling).
If: Checks MIME type to ensure the file is a PDF.
Extract From File: Converts the PDF binary into text.
Set: Assignments to organize the text data.
Code: Cleans the text (removes excess newlines) to prepare it for the LLM.
Basic LLM Chain: Orchestrates the AI prompt and processing.
AI Chat Model: The specific LLM provider used for high-speed inference.
Telegram: Sends the final summary back to the user.

Output Example

The bot will reply with a message formatted like this: > Title: Q3 Financial Report > Type: Financial Report > Exec Summary: Revenue increased by 15% due to new product lines... > Key Insights: > • Growth in APAC region. > • Reduced operational costs by 5%.

🙏 Thank You for Trying This Workflow!

Your time and trust mean a lot! I truly appreciate you using this template.

Your feedback shapes future updates:

💡 Suggestions for improvement
🆕 Ideas for new features
📝 Requests for other automation workflows

Please share your thoughts! Every idea helps shape the next update.

🙋‍♂️ Join & Follow For More Free Templates!

Discord Community: We Work Together

Get help, share builds, collaborate! Daily tips, tutorials, and updates

Thank you again for being part of this journey! 🚀

Together, we automate better! 🤖✨

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Get PDF Data

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 2 - Extract PDF Data

Type / Role: n8n-nodes-base.extractFromFile - extractFromFile
Config choices: Version 1

Block 3 - Data Parser & Cleaner

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 4 - Is PDF File

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 5 - No Operation, do nothing

Type / Role: n8n-nodes-base.noOp - noOp
Config choices: Version 1

Block 6 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 7 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 9 - Basic LLM Chain

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.7

Block 10 - Telegram Trigger

Type / Role: n8n-nodes-base.telegramTrigger - telegramTrigger
Config choices: Version 1.2

Block 11 - Groq Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatGroq - lmChatGroq
Config choices: Version 1

Block 12 - Send a text message

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 13 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 14 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note6

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Summarize PDF documents in Telegram with Groq AI
Complexity	advanced
Nodes	16
Categories	Document Extraction, AI Summarization
Author	EoCi - Mr.Eo
Published	03 Dec 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/11451/11451.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows AI Summarization workflows

Frequently asked questions

What does Summarize PDF documents in Telegram with Groq AI do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction, AI Summarization use case.

EoCi - Mr.Eo

6 workflows

Nodes

n8n-nodes-base.set n8n-nodes-base.extractfromfile n8n-nodes-base.code n8n-nodes-base.if n8n-nodes-base.noop n8n-nodes-base.stickynote @n8n/n8n-nodes-langchain.chainllm n8n-nodes-base.telegramtrigger

Complexity

advanced

Published 03 Dec 2025

Likes 0

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Install path: /data/workflows/11451/11451.json

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Summarize PDF documents in Telegram with Groq AI

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How It Works

Setup Instructions

Nodes Used

Output Example

🙏 Thank You for Trying This Workflow!

Your feedback shapes future updates:

Please share your thoughts! Every idea helps shape the next update.

🙋‍♂️ Join & Follow For More Free Templates!

Discord Community: We Work Together

Thank you again for being part of this journey! 🚀

Together, we automate better! 🤖✨

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Get PDF Data

Block 2 - Extract PDF Data

Block 3 - Data Parser & Cleaner

Block 4 - Is PDF File

Block 5 - No Operation, do nothing

Block 6 - Sticky Note

Block 7 - Sticky Note1

Block 8 - Sticky Note3

Block 9 - Basic LLM Chain

Block 10 - Telegram Trigger

Block 11 - Groq Chat Model

Block 12 - Send a text message

Block 13 - Sticky Note4

Block 14 - Sticky Note2

Block 15 - Sticky Note5

Block 16 - Sticky Note6

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions