Umbraco Localization

What is it?

Localization enables UI translation through localization files managed by the Extension Registry, with English (iso code: 'en') as the fallback language. The Localization Controller (automatically available in Umbraco Elements via this.localize) provides access to translated strings using keys. Custom translations can be added via the Extension Registry and referenced in manifests using the # prefix.

Documentation

Always fetch the latest docs before implementing:

• Main docs: https://docs.umbraco.com/umbraco-cms/customizing/foundation/localization
• Foundation: https://docs.umbraco.com/umbraco-cms/customizing/foundation
• Extension Registry: https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-registry

Workflow

1. Fetch docs - Use WebFetch on the URLs above
2. Ask questions - Using built-in keys or custom? Need pluralization? Dynamic values?
3. Generate code - Implement localization based on latest docs
4. Explain - Show what was created and how to test