Umbraco Extension Template

What is it?

The Umbraco Extension Template is the official .NET template for creating backoffice extensions. It provides a pre-configured project structure with TypeScript/Vite tooling, proper folder structure, and all essential files needed for extension development. Every Umbraco backoffice extension should start with this template.

Documentation

Always fetch the latest docs before implementing:

• Main docs: https://docs.umbraco.com/umbraco-cms/extend-your-project/backoffice-extensions/development-flow/umbraco-extension-template
• Development Flow: https://docs.umbraco.com/umbraco-cms/extend-your-project/backoffice-extensions/development-flow
• Foundation: https://docs.umbraco.com/umbraco-cms/extend-your-project/backoffice-extensions/foundation

Prerequisites

• .NET SDK 10.0 or later
• Node.js 24 or later

Workflow