The Office Add-ins Development Kit helps developers set up their environment, create Office Add-ins, and debug their code with a streamlined developer experience.
Open the Office Add-ins Development Kit to create a new add-in and start coding!
In the Office Add-ins Development Kit for Visual Studio Code, you can discover all the commands in the sidebar and Command Palette with the keyword "Office". It also supports Command Line Interface (CLI) to increase efficiency.
Verify that you have the right prerequisites for building Office Add-ins and install some recommended development tools. Read more details.
- Node.js (the latest LTS version). Visit the Node.js site to download and install the right version for your operating system. To verify if you've already installed these tools, run the commands
node -vandnpm -vin your terminal. - Office connected to a Microsoft 365 subscription. You might qualify for a Microsoft 365 E5 developer subscription through the Microsoft 365 Developer Program, see FAQ for details. Alternatively, you can sign up for a 1-month free trail or purchase a Microsoft 365 plan.
Use the Office Add-ins Development Kit for Visual Studio Code to set up your first add-in project. Create your Office add-in project using the following steps:
- Ensure you've installed the Office Add-ins Development Kit for Visual Studio Code.
- Select the Office Add-ins Development Kit icon in the Visual Studio Code Activity Bar to open the extension.
- Select Create a New Add-in.
- In the dropdown that opens, select an Office app for which you want to build the add-in.
- Select an add-in template from the list of available templates.
- Select JavaScript or TypeScript as the programming language.
- In the Workspace folder dialog that opens, select the folder where you want to create the project.
- Give a name to the project (with no spaces) when prompted. The Office Add-ins Development Kit will create the project with basic files and scaffolding. It will then open the project in a new Visual Studio Code window. You are free to close the original Visual Studio Code window.
An Office Add-in includes two basic components: an XML manifest file, and your own web application.
- The manifest defines various settings, including how your add-in integrates with Office clients.
- Your web application needs to be hosted on a web server, or web hosting service, such as Microsoft Azure.
Once your add-in project is created, explore and customize the components by reviewing the following key files.
- The
./manifest.xmlfile in the root directory of the project defines the settings and capabilities of the add-in.
Check whether your manifest file is valid by selecting Validate Manifest File option from the Office Add-ins Development Kit. - The
./src/taskpane/taskpane.htmlfile contains the HTML markup for the task pane. - The
./src/taskpane/taskpane.cssfile contains the CSS that's applied to content in the task pane. - The
./src/taskpane/taskpane.jsfile contains the Office JavaScript API code that facilitates interaction between the task pane and the Office application.
To understand how the add-in will work in Office apps, use the Office Add-ins Development Kit to easily run and debug your Office add-in in your local dev environment.
Select Preview Your Office Add-in (F5) to launch the add-in and debug the code. In the dropdown menu, select the option Edge Desktop (Edge Chromium).
The extension then checks that the prerequisites are met before debugging starts. The terminal will display detailed information if there are issues with your environment. After this process, the Office desktop application launches and sideloads the add-in.
You can also start debugging by pressing F5 or running the npm run start command in the terminal.
For information on running the add-in on Office on the web, see Sideload Office Add-ins to Office on the web.
For information on debugging on older versions of Office, see Debug add-ins using developer tools in Microsoft Edge Legacy.
Once you've finished testing and debugging the add-in, select Stop Previewing Your Office Add-in. This closes the web server and removes the add-in from the registry and cache.
All the information about Office Add-ins is found in our official documentation. To explore more samples of real-world scenarios, in the Office Add-ins Development Kit select View Samples.
Give security researchers information on how to privately report security vulnerabilities found in your open-source project. See more details Reporting security issues.
The software may collect information about you and your use of the software and send it to Microsoft. Microsoft may use this information to provide services and improve our products and services. You may turn off the telemetry as described in the repository. There are also some features in the software that may enable you and Microsoft to collect data from users of your applications. If you use these features, you must comply with applicable law, including providing appropriate notices to users of your applications together with a copy of Microsoft's privacy statement. Our privacy statement is located at Microsoft Privacy Statement. You can learn more about data collection and use in the help documentation and our privacy statement. Your use of the software operates as your consent to these practices.
Telemetry collection is on by default. To opt out, please set the telemetry.enableTelemetry setting to false. Learn more in our FAQ.
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