Umbraco Extension Registry

What is it?

The Extension Registry is the core system managing all Umbraco backoffice UI elements - almost any UI in the Backoffice is an extension managed by the Extension Registry. The registry allows developers to dynamically add, remove, or modify extensions at runtime using umbExtensionsRegistry. Developers have the same possibilities as Umbraco HQ, meaning you can change almost everything that is by default present in Umbraco.

Documentation

Always fetch the latest docs before implementing:

• Main docs: https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-registry
• Register Extensions: https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-registry/register-extensions
• Replace/Exclude: https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-registry/replace-exclude-or-unregister
• Extension Manifest: https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-registry/extension-manifest
• Foundation: https://docs.umbraco.com/umbraco-cms/customizing/foundation

Workflow

1. Fetch docs - Use WebFetch on the URLs above
2. Ask questions - Register, exclude, or replace? Runtime or static? Conditions needed?
3. Generate code - Implement registry operations based on latest docs