[android-components](../../index.md) / [mozilla.components.concept.engine.webextension](../index.md) / [Metadata](index.md) / [baseUrl](./base-url.md)

# baseUrl

`val baseUrl: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/engine/src/main/java/mozilla/components/concept/engine/webextension/WebExtension.kt#L406)

Base URL for pages of this extension. Can be used to determine if a page
is from / belongs to this extension.

