![]() ![]() If the content security policy is not defined by the user in the manifest, the default properties will be used for both extension pages and sandboxed extension pages. The sandbox policy applies to all pages specified as a sandbox page in the manifest. This would include the extension popup, background worker, and tabs with HTML pages or iframes that were opened by the extension. The "extension pages" policy applies to page and worker contexts in the extension. Within this manifest key, separate optional policies can be defined for both extension pages and sandboxed extension pages. Devtools Add features to Chrome Developer Tools.An optional manifest key defining restrictions on the scripts, styles, and other resources an extension can use. # Expand Chrome DevTools Debugger Instrument network interaction, debug JavaScript, mutate the DOM and CSS. Other deployment options Distribute extensions on a designated network or with other software. # Package, deploy, and update Chrome Web Store Hosting and updating extensions with the Chrome Web Store. Declarative net request Provide rules that tell Chrome how to intercept, block, or modify requests in-flight. Web navigation Status updates of navigation requests in-flight. Tab capture Interact with tab media streams. ![]() Page capture Save a tab's source information as MHTML. Desktop capture Capture content of screen, individual windows or tabs. Declarative content Perform actions on the content of a page without requiring permission. Cross-origin XMLHttpRequest Use XMLHttpRequest to send and receive data from remote servers. Cookies Explore and modify the browser's cookie system. When a fetch () response takes more than 30 seconds to arrive. When a single request, such as an event or API call, takes longer than 5 minutes to process. Receiving an event or calling an extension API resets this timer. Content scripts Run JavaScript code in the context of web pages. Normally, Chrome terminates a service worker when one of the following conditions is met: After 30 seconds of inactivity. Content settings Customize websites features such as cookies, JavaScript, and plugins. # Modify and observe the web Active tab Securely access websites by removing most needs for host permission. Windows Create, modify, and rearrange windows in the browser. Themes Change the overall appearance of the browser. Top sites Access users most visited URLs. Tabs Create, modify, and rearrange tabs in the browser. Sessions Query and restore tabs and windows from a browsing session. History Interact with the browser's record of visited pages. Downloads Programmatically initiate, monitor, manipulate, and search for downloads. Browsing data Remove browsing data from a user's local profile. # Modify and observe the Chrome browser Bookmarks Create, organize, and manipulate bookmark behavior. Permissions Modify an extension's permissions. Options page Let users customize an extension. Message passing Communicate from a content script to its parent extension, or vice versa. Management Manage extensions that are installed and running. Internationalization Work with language and locale. Service workers Detect and react when something interesting happens. ![]() # Build extension utilities Accessibility Make an extension accessible to people with disabilities. Actions Dynamically display icons in the toolbar. Pages Create a version of the New Tab, Bookmark, or History page. Omnibox Add keyword functionality to the address bar. Menus Add items to Google Chrome's context menu. Commands Add keyboard shortcuts that trigger actions. # Customize the user interface Action Control the display of an extension's icon in the toolbar. You are encouraged to explore and expand extension functionality. After reading the Getting Started guides and Architecture Overview, use this guide as an outline of extension components and their capabilities in Manifest V3. ![]()
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