Extract invoice data from PDFs to JSON with Gemini AI and XML transformation

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This n8n workflow converts invoices in PDF format into a structured, ready to use JSON , using AI and XML transformation — without writing any code. How it works 1. Upload form → The user upload...

Best for

Invoice Processing automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.formtrigger, n8n-nodes-base.extractfromfile, @n8n/n8n-nodes-langchain.googlegemini, n8n-nodes-base.set, n8n-nodes-base.xml, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Mauricio Perera.

Original n8n.io source

1.1 Workflow description

Title: Extract invoice data from PDFs to JSON with Gemini AI and XML transformation
Workflow name: Extract invoice data from PDFs to JSON with Gemini AI and XML transformation

This n8n workflow converts invoices in PDF format into a structured, ready-to-use JSON, using AI and XML transformation — without writing any code.

🚀 How it works

Upload form → The user uploads a PDF file.
Text extraction → The PDF content is extracted as plain text.
XML schema definition → A standard invoice structure is defined with fields such as:
- Invoice number
- Customer and issuer details
- Items with description, quantity, and price
- Totals and taxes
- Bank account details
AI (Gemini) → The model rewrites the PDF text into a valid XML following the predefined schema.
XML cleanup → Removes extra tags, line breaks, and unnecessary formatting.
JSON conversion → The XML is transformed into a clean, structured JSON object, ready for integrations, APIs, or storage.

✨ Benefits

Transforms unstructured PDFs into normalized JSON data.
No coding required, only n8n nodes.
Scalable to different invoice formats with minimal adjustments.
Leverages AI to interpret complex textual content.

🛠️ Use cases

Automating invoice data capture.
Integration with ERPs, CRMs, or databases.
Generating financial reports from PDFs.

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 - On form submission

Type / Role: n8n-nodes-base.formTrigger - formTrigger
Config choices: Version 2.3

Block 2 - Extract from File

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

Block 3 - Message a model

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

Block 4 - Limpio data

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

Block 5 - Limpio XML

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

Block 6 - XML to JSON

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

Block 7 - Sticky Note

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

Block 8 - Sticky Note1

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

Block 9 - Sticky Note2

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

Block 10 - Sticky Note3

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

3. Summary Table

Workflow	Extract invoice data from PDFs to JSON with Gemini AI and XML transformation
Complexity	intermediate
Nodes	10
Categories	Invoice Processing, AI Summarization
Author	Mauricio Perera
Published	10 Sept 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/8460/8460.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 Invoice Processing workflows AI Summarization workflows

Frequently asked questions

What does Extract invoice data from PDFs to JSON with Gemini AI and XML transformation 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 Invoice Processing, AI Summarization use case.

Mauricio Perera

9 workflows

Nodes

n8n-nodes-base.formtrigger n8n-nodes-base.extractfromfile @n8n/n8n-nodes-langchain.googlegemini n8n-nodes-base.set n8n-nodes-base.xml n8n-nodes-base.stickynote

Complexity

intermediate

Published 10 Sept 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/8460/8460.json

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Extract invoice data from PDFs to JSON with Gemini AI and XML transformation

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

🚀 How it works

✨ Benefits

🛠️ Use cases

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - On form submission

Block 2 - Extract from File

Block 3 - Message a model

Block 4 - Limpio data

Block 5 - Limpio XML

Block 6 - XML to JSON

Block 7 - Sticky Note

Block 8 - Sticky Note1

Block 9 - Sticky Note2

Block 10 - Sticky Note3

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