About Office Add-ins

Use the Office Add-ins platform to build solutions that extend Office applications and interact with content in Office documents. With Office Add-ins, you can use familiar web technologies such as HTML, CSS, and JavaScript to build a solution that can run in Office across multiple platforms, including on Windows, Mac, iPad, and in a web browser.

All Office Add-ins are built upon the Office Add-ins platform and share a common framework through which certain capabilities can be implemented. Explore the following articles for information that's relevant to building any type of Office Add-in.

Learn about specific types of add-ins

Explore the following sections to learn about building an add-in for Excel, OneNote, Outlook, PowerPoint, Project, or Word.

New to building Office Add-ins? Complete a quick start to build your first add-in in under 5 minutes and explore the Office JavaScript APIs with Script Lab!


Use the following resources to explore the APIs, ask questions, report issues, or request features related to the Office Add-ins platform or JavaScript API. For information about additional resources, see Office Add-ins additional resources.