The short answer is . There is no "off switch" in the Google Apps Script settings to hide this banner.
Using a service like or a simple Node.js/Express server, you can fetch the HTML content from your Google Apps Script, strip out the Google-injected header tags, and serve the cleaned HTML on your own custom domain. Pros: Complete removal of the banner; professional URL.
Use the following HTML code on your own website: The short answer is
By understanding these limitations, you can better plan your project's user experience from the start.
Use code with caution.
Google Apps Script is designed for quick internal tools. For client-facing applications, developers often migrate their logic to or Firebase Hosting .
How to Remove the "This application was created by a Google Apps Script user" Header Pros: Complete removal of the banner; professional URL
Method 3: Switching to Google Cloud Run (The Professional Path)