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## Resource: About External URL Extensions

## Article: About External URL Extensions

## Article Link: https://dev.wix.com/docs/dashboard-extensions/external-urls/about-external-url-extensions.md

## Article Content:

# About External URL Extensions

An [external URL extension](https://dev.wix.com/docs/overview/extensions-framework/dashboard-extensions/external-url-extensions.md) adds a link on the Manage Apps page in the Wix dashboard. The link opens a destination you host outside Wix in a new browser tab. This reference is the contract for that extension in a Wix CLI app. It covers the generated file and the configuration object.

The extension has no component and doesn't run code in the dashboard. An app can register only 1 external URL extension.

A Studio Two site doesn't use this extension. To add an external URL extension to a site, create a private app that registers it and install that app on the site. Wix-managed and self-managed headless projects don't support it. Self-managed apps and Blocks apps set the URL in the App Dashboard instead of this file. See [Add External URL Extensions](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/dashboard-extensions/external-links/add-external-link-extensions.md) in Build Apps.

## What's in this reference

- [External URL Extension Files and Code](https://dev.wix.com/docs/dashboard-extensions/external-urls/external-url-extension-files-and-code.md): The generated file and the `extensions.dashboardExternalPage()` configuration fields.

## See also

- [External URL Extensions](https://dev.wix.com/docs/overview/extensions-framework/dashboard-extensions/external-url-extensions.md)
- [External URL Extension Files and Code](https://dev.wix.com/docs/dashboard-extensions/external-urls/external-url-extension-files-and-code.md)
- [Add External URL Extensions with the Wix CLI](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/dashboard/external-links/add-external-url-extensions-with-the-wix-cli.md)
- [About App Instances](https://dev.wix.com/docs/build-apps/develop-your-app/access/app-instances/about-app-instances.md)