Programming Tutorials

  Manual data entry between Google Sheets and Google Docs is a silent productivity killer. Whether you are a business analyst generating monthly invoices or an HR administrator processing contracts, copy-pasting data into templates is error-prone and unscalable. While "mail merge" add-ons exist, they often pose security risks, cost money, or lack the flexibility required for custom workflows. This guide provides a robust, Principal Engineer-level implementation of an automated pipeline using Google Apps Script. We will build a system that reads structured data from Sheets, injects it into a Docs template, converts the result to a PDF, and emails it to the client—all with zero manual intervention. The Technical Challenge: The Document Object Model (DOM) Before writing code, it is critical to understand why this process often breaks for beginners. Google Docs are not simple text files; they are complex structures represented by a Document Object Model (DOM). When you type into ...