Extract PDF Itineraries to Google Sheets with GPT-4.1-Mini & Gmail Notifications Overview Automates PDF data extraction using OpenAI GPT, saves to Google Sheets, sends email confirmations. Reduces manual entry by 90%. How It Works Receives PDF uploads via form Splits & loops through files AI extracts structured data Appends to Sheets with timestamps Sends confirmation email Prerequisites OpenAI API key ( platform.openai.com ) Google Workspace (Sheets & Gmail) n8n v1.0.0+ Setup Add OpenAI API key to n8n credentials Create Google Sheet with extraction columns, authorize OAuth2 Configure Gmail OAuth2 Import workflow JSON Edit AI prompt for your fields Activate & share form URL Customization Modify extraction prompts Adjust Sheets mapping Customize email templates Add error handling/validation Extend to Word/Excel files Use Cases Invoices, expense reports, resumes, contracts, forms, legal docs