I want to develop Microsoft office add on

Hello,

I appreciate your positive feedback about the Microsoft community and your interest in developing a Microsoft Office add-on for your websites. Developing Office add-ons can be a great way to extend the functionality of Microsoft Office applications and provide value-added features for users.

To create an Office add-on for your websites, you will need to follow the Microsoft Office Add-ins development process. Here are the general steps you can take:

1. Choose the Office application: Determine which Office application (such as Word, Excel, PowerPoint, etc.) you want to create the add-on for, as the process may vary slightly depending on the application.

2. Choose the technology: Microsoft provides different technologies for developing Office add-ons, such as Office JavaScript APIs, Office.js library, or Visual Studio Tools for Office (VSTO) for .NET-based solutions. Choose the technology that best suits your development skills and requirements.

3. Familiarize with the documentation and APIs: Review the official Microsoft documentation and APIs for the chosen technology to understand the development process, APIs, and capabilities of the Office add-ons.

4. Design and develop the add-on: Plan and design the features of your Office add-on, and then develop the add-on using the chosen technology. You can use the Office APIs to interact with Office documents, data, and UI elements to implement the desired functionality.

5. Test and debug: Thoroughly test and debug your Office add-on to ensure it works correctly in the targeted Office application and meets the desired functionality.

6. Publish and distribute: Once your Office add-on is tested and ready, you can publish it to the Microsoft Office Store or distribute it using other methods, such as sideloading, depending on your requirements.

I've followed these steps for my sites WhatsApp Groups, ELE & FBDownloader and get success. 

It's important to note that developing Office add-ons requires familiarity with programming languages, frameworks, and Microsoft Office development concepts. If you are new to Office add-in development, you may need to invest time in learning the necessary skills and understanding the development process.

I recommend referring to the official Microsoft documentation and resources for detailed information on developing Office add-ons. Good luck with your development efforts!