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Get a short summary of every webpage.

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Adds a custom cursor on developer.chrome.com.

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This recipe shows how to use sidePanel.getOptions() to retrieve the current side panel and switch between side panels.

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Shows how to display the same side panel on every site using the Side Panel API.

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Try the Gemini Models.

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Try the built-in AI preview in Chrome.

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Basic Hello World Extension

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Generate a red triangle with WebGPU in an extension service worker.

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Provides definitions in the side panel.

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Uses the chrome.privacy.services property to get and set privacy settings.

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Uses the chrome.userScripts API to inject JavaScript into web pages.

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Override system power-saving settings.

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Send a message to a native application.

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Uses the chrome.readingList API to display, update and remove reading list entries.

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Records the current tab in an offscreen document.

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How to use Google Analytics 4 in your extension.

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Demonstrates all four methods of the chrome.printing namespace.

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Demonstrates the chrome.declarativeNetRequest API by providing a UI to manipulate declarativeNetRequest rules dynamically.

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Uses the chrome.windows and chrome.tabs APIs to manage tabs across different windows.

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Shows how to use the file_handlers manifest key with the web platform's Launch Handler API.

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Demonstrates the Idle API

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Demonstrates the webRequest.onAuthRequired listener to detect an authentication request and log the user into the designated site.

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Shows how to use WebAssembly (WASM) in Manifest V3.

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Demonstrates the favicon manifest permission by displaying the favicon of a url in the extension popup.

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Shows how to get geolocation access within a service worker.

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Demonstrates the chrome.fontSettings API by allowing users to modify the style of displayed fonts on web pages.

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Uses the chrome.alarms API to allow the user to set alarms using an extension page.

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Uses the chrome.debugger API to capture network events on web pages.

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Uses chrome.contentSettings to display the settings of a given page in the extension's popup.

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Shows how to call sidePanel.open() to open a global side panel.

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Uses the chrome.topSites API to get the user's most visited sites.

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Uses the "chrome_url_overrides" manifest key by replacing the user's default new tab page with a new html file.

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Uses the chrome.contextMenus API to customize the context menu.

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Uses devtools.inspectedWindow to collect and use data on the resouces used in a web page.

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Demonstrates the "omnibox" manifest key and API by creating a keyword that opens a browser search in a new tab.

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Demonstrates fetching the favicon from www.google.com and inserting it at the top left of every page.

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Uses the chrome.declarativeNetRequest API to redirect requests.

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Uses the tabs.zoom API to manipulate the zoom level of the current tab.

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Build an Extension!

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Uses the context menu to search a different country's Google

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Shows how to use WebAssembly (WASM) as a module in Manifest V3.

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How to use WebSockets in your Chrome Extension.

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Demonstrates usage and features of the event page by reminding user to drink water

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Shows how to display the side panel only on google.com using the Side Panel API.

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Shows how to use DOMParser in an extension service worker using the offscreen document.

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Fix an Extension!

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Uses the webNavigation API to send notifications.

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Shows how to get geolocation access within a content script.

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Uses the chrome.scripting API to inject JavaScript into web pages.

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Shows how to write a string to the system clipboard using the offscreen document.

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Uses the chrome.declarativeNetRequest API to block requests.

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Turns the page red when you click the icon

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Enable focus mode on Chrome's official Extensions and Chrome Web Store documentation.

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Add the reading time to Chrome Extension documentation articles

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Uses the web_accessible_resources key in the manifest.json file to control access to assets within an extension.

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Shows how to get geolocation access within a popup.

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Demonstrates the creation of, and interaction with, each of the notification template types.

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Uses the devtools API to add a sidebar that displays the jQuery data associated with the selected DOM element.

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Uses the chrome.history API to display in a popup the user's most visited pages.

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Demonstrates the chrome.i18n API by localizing text in the extension popup.

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Shows the Chromium release milestone a given code review was merged into.

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Demonstrates how to use the chrome.storage API.

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Uses the chrome.tabs API to take a screenshot of the active tab.

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Uses the chrome.bookmarks API to search through, add, and delete bookmarks from the user's bookmark tree.

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Demonstrates optional permissions in extensions

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Quick API can speed up the building of Chrome extensions.

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Uses the chrome.declarativeNetRequest API to remove the "Cookie" header from requests.

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Demonstrates the chrome.tabs API and the chrome.windows API by providing a user interface to manage tabs and windows.

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Uses the chrome.tabs API to toggle the pinned state of the current tab.

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Uses the chrome.browsingData API to clear the user's history without requiring the user to visit the history page.

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Demonstrates using WebHID to connect to a CO2 meter.

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A browser action with a popup dump of all bookmarks, including search, add, edit and delete.

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Uses the chrome.commands API by creating a new keyboard macro for switching tabs in the browser window.

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Demonstrates the chrome.fontSettings API by allowing users to modify the size of fonts on webpages.

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Demonstrates how to override the default history page.

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Demonstrates creation of a tab with a sandboxed iframe to which the main page passes a counter variable.

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Uses the chrome.topSites API to suggest which sites a user should visit.

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Replace every image by a cat's image in a website you visit

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Demonstrates the "omnibox" manifest key and most members of the omnibox API.

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Uses the Action API to change the badge text, icon, hover text, or popup page.

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Demonstrates how to use the chrome.tabCapture API.

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Base Level Extension

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Demonstrates creating a tab for a sandboxed iframe. The sandbox calls eval() to write HTML to its own document.

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Example extension from DevTools Tips video.

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Uses the chrome.cookies API by letting a user delete their cookies via a popup.