Remove This Application Was Created By A Google Apps Script User //top\\ Free

removes the top-level banner, as the code runs within a sidebar or dialog instead of a standalone web app page. Client-Side Workarounds (Visual Only)

Only locally via browser extensions. The server-side security dialog remains. removes the top-level banner, as the code runs

iframe position: fixed; top: 0; left: 0; bottom: 0; right: 0; width: 100%; height: 100%; border: none; Use code with caution. Copied to clipboard removes the top-level banner

The light-blue warning banner stating "This application was created by a Google Apps Script user" is a security feature automatically added by Google to all web apps deployed via Apps Script removes the top-level banner, as the code runs