Office.js add-ins¶

Office.js add-ins are web apps that can interact with Excel. In their simplest form, they consist of just two files:

Manifest XML file: This is a configuration file that is loaded in Excel (either manually during development or via the add-in store for production). It defines the ribbon buttons and includes the URL to the backend/web server.
HTML file: The HTML file has to be served by a web server and defines the layout and functionality of the task pane as well as commands (commands are functions that are directly linked to ribbon buttons).

To get a better understanding about how the simplest possible add-in works (without Python or xlwings), have a look at the following repo:

Follow the repo’s README if you want to load the add-in locally in Excel.