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The Extension Framework page in the Platform section of the Admin menu lets you enable or disable Looker extension framework options.
Extension Framework
When enabled, the Extension Framework option lets developers build and run Looker-hosted applications as well as install and run extensions from the Looker Marketplace, such as the API Explorer and the Data Dictionary. This feature is enabled by default.
When this feature is disabled, any extensions that have been installed are hidden and unavailable to users.
Pricing, terms, and other details for Marketplace content and extensions such as the API Explorer and Data Dictionary are listed within the relevant store page. Before users can install and use Marketplace extensions, a Looker admin must enable the Marketplace feature.
Enhanced Extension Loading
To address potential Content Security Policy (CSP) violations, there is a new, enhanced loading mechanism for the Looker extension framework, which includes the following changes:
To fix Content Security Policy (CSP) violations, HTML is generated to load an extension on the server rather than in the browser.
The base tag is removed, which potentially could impact custom code splitting.
The new loader uses a <!DOCTYPE html> preamble. This may impact components that use height: 100%;. You can mitigate this by using height: 100vh.
To use the enhanced loading mechanism, a Looker admin can enable Enhanced Extension Loading.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-25 UTC."],[],[],null,["# Admin settings - Extension Framework\n\nThe **Extension Framework** page in the **Platform** section of the **Admin** menu lets you enable or disable Looker extension framework options.\n| **Note:** If you have a permission that provides access to only select pages in the Admin panel, such as [`manage_schedules`](/looker/docs/2512/admin-panel-users-roles#manage_schedules), [`manage_themes`](/looker/docs/2512/admin-panel-users-roles#manage_themes), or [`see_admin`](/looker/docs/2512/admin-panel-users-roles#see_admin), but you don't have the [Admin role](/looker/docs/2512/admin-panel-users-roles#default_roles), the page or pages that are described here may not be visible to you in the Admin panel.\n\nExtension Framework\n-------------------\n\nWhen enabled, the **Extension Framework** option lets developers build and run Looker-hosted applications as well as install and run extensions from the [Looker Marketplace](/looker/docs/2512/marketplace), such as the [API Explorer](/looker/docs/2512/api-explorer) and the [Data Dictionary](/looker/docs/2512/using-looker-data-dictionary). This feature is enabled by default.\n\nWhen this feature is disabled, any extensions that have been installed are hidden and unavailable to users.\n\nPricing, terms, and other details for Marketplace content and extensions such as the API Explorer and Data Dictionary are listed within the relevant store page. Before users can install and use Marketplace extensions, a Looker admin must enable the [Marketplace](/looker/docs/2512/admin-panel-platform-marketplace) feature.\n\nEnhanced Extension Loading\n--------------------------\n\nTo address potential [Content Security Policy (CSP)](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP) violations, there is a new, enhanced loading mechanism for the Looker extension framework, which includes the following changes:\n\n- To fix Content Security Policy (CSP) violations, HTML is generated to load an extension on the server rather than in the browser.\n- The `base` tag is removed, which potentially could impact custom code splitting.\n- The new loader uses a `\u003c!DOCTYPE html\u003e` preamble. This may impact components that use `height: 100%;`. You can mitigate this by using `height: 100vh`.\n\nTo use the enhanced loading mechanism, a Looker admin can enable **Enhanced Extension Loading**.\n| **Warning:** The enhanced loader may cause errors with existing extensions. Disable this option to use the legacy extension framework loader."]]
