Extract PDF and Image Text to CSV Using Vertex AI (Gemini)
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Automate text extraction from PDFs and images stored in Google Drive into a CSV format using Vertex AI (Gemini). This workflow streamlines data processing and reduces manual entry.
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About This Workflow
Overview
This n8n workflow is designed to automatically extract text content from PDF documents and images stored in Google Drive, transforming them into a structured CSV file. It begins by monitoring a specified Google Drive folder for new files. Based on the file type (PDF or image), it downloads the content and then utilizes Google's Vertex AI (specifically the Gemini model) for robust text extraction. The extracted data is then converted into CSV format and uploaded back to Google Drive. This solution is ideal for automating the processing of invoices, receipts, scanned documents, or any visual data that needs to be converted into a tabular format for further analysis or storage.
Key Features
- Monitors a Google Drive folder for new PDF or image files.
- Supports both PDF and common image file types.
- Leverages Google Vertex AI (Gemini) for accurate text extraction from both document and image sources.
- Automatically converts extracted text into a CSV file.
- Uploads the generated CSV file to a designated Google Drive folder.
- Reduces manual data entry and improves processing speed.
How To Use
- Set up Google Drive Integration: Ensure your n8n instance is connected to your Google Drive account, preferably using a service account for enhanced security and permissions.
- Configure Google Drive Trigger: Set up the 'Google Drive Trigger' node to watch a specific folder for new file creations. This folder will be where you upload your PDFs and images.
- Configure Vertex AI: Enable Vertex AI in your Google Cloud project and ensure your Google Cloud credentials in n8n have the necessary permissions to access and use the Vertex AI API, particularly for image and text analysis with Gemini.
- Process Files: The workflow will route PDF files to the PDF extraction node and image files to the image text extraction process.
- AI Text Extraction: The 'Google Gemini Chat Model' (or an equivalent Vertex AI node) will process the downloaded content to extract text.
- Convert to CSV: Use the 'Convert to CSV' node to structure the extracted text into a CSV format.
- Upload CSV: Configure the 'Upload to Google Drive' node to save the generated CSV file to a desired destination folder in your Google Drive.
Apps Used
Workflow JSON
{
"id": "bbc74a39-ecb6-4b28-939b-da2456c545c5",
"name": "Extract PDF and Image Text to CSV Using Vertex AI (Gemini)",
"nodes": 0,
"category": "PDF and Document Processing",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
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ID: bbc74a39-ecb6...
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