Editor: We’ve previously featured Zig Mandel’s comprehensive framework that integrates Google Apps Script web apps into a standard website. Zig has been busy with an update which we are reposting from Reddit with permission:
I’ve shipped a major update to my Apps Script Website Integration Framework. The framework now allows running an HTMLService frontend entirely outside the GAS iframe, directly on your website.
Why use this?
HTMLService is convenient, but the iframe environment blocks a lot of modern web-dev capabilities: slow load, limited browser APIs, no TypeScript, no React, no Vite/live-reload, no custom domains, etc.
This update removes all of those constraints. You can develop, debug, and deploy a GAS webapp like a normal website – using any tooling, libraries, or build process you want.
How this compares to the previous method
The original method already bypassed several HTMLService limitations. The new approach goes further by running completely outside the iframe (faster, full capabilities), with one trade-off: it doesn’t support HTML templates. If you rely on templates, you can start with the original method and later migrate to this new method once templates are no longer needed.
The monorepo includes live working examples. Star if you like it!
Repo here: https://github.com/zmandel/demosite_appscript
Member of Google Developers Experts Program for Google Workspace (Google Apps Script) and interested in supporting Google Workspace Devs.