![]() In addition, it includes what to be aware of when designing and distributing an extension in the Chrome Web Store. # Extension development concepts Extensions 101 Briefly covers some fundamental concepts of Chrome Extension development like web technologies and commonly used extension components. Add extensions to chrome how to## □ Ready to start building?Ĭhoose any of the following tutorials to begin your extension learning journey.Welcome to the Getting Started Guides! The purpose of this page is to describe each article and how to share your feedback. See Publish in the Chrome Web Store to learn how to distribute your extension. Bare in mind that extensions must adhere to the developer program policies. You can set up a developer account with the Chrome Web Store to host and distribute your extension. See Extension quality guidelines for additional details. Regardless of the extension's purpose, the experience provided by the extension must respect the user's other settings and preferences. ![]() For example, "new tab page", "tab management", or "search provider". Or, an extension can have a single purpose limited to a narrow browser function. For example, "news headlines", "weather", "comparison shopping". "Single purpose" can refer to one of two aspects of an extension:Īn extension can have a single purpose limited to a narrow focus area or subject matter. □ What exactly does "single purpose" mean? ![]() Visit Extensions Architecture and Designing the user interface to dive deeper. All these pages have access to Chrome APIs. The popup and other pages An extension can include various HTML files, such as a popup, an options page, and other HTML pages. Content Scripts can only use a subset of the Chrome APIs but can indirectly access the rest by exchanging messages with the extension service worker. They can also read and modify the DOM of the pages they're injected into. Content scripts Content scripts execute Javascript in the context of a web page. It can use all the Chrome APIs, but it cannot interact directly with the content of web pages that’s the job of content scripts. There are many types of events, such as navigating to a new page, removing a bookmark, or closing a tab. The service worker The extension service worker handles and listens for browser events. The manifest records important metadata, defines resources, declares permissions, and identifies which files to run in the background and on the page. It also has to be located in the extension's root directory. The following are some of the most frequently used files: The manifest The extension's manifest is the only required file that must have a specific file name: manifest.json. # Extension filesĮxtensions contain different files, depending on the functionality provided. See Extension development overview for a complete list of API capabilities. Allow users to collect and organize information across websites.Change the functionality or behavior of a website.The following are just a few examples of what extensions can do: What makes extensions more powerful than a web app is their access to Chrome APIs. # Chrome extension APIsĮxtensions can use all the JavaScript APIs that the browser provides. JavaScript is used for scripting and logic.īefore moving forward, we recommend that you become familiar with these technologies. ![]()
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