There are a few reasons why you may need to use What is my browser tool. Some of these reasons include:

1. Browser Compatibility: Some websites or web applications may only work properly on certain browsers. By using a "What is my browser" tool, you can quickly determine which browser you are using and ensure that you are using a compatible browser.

2. Troubleshooting: If you are experiencing issues while browsing the internet, using a "What is my browser" tool can help you determine if the problem is related to your browser or if it is a problem with the website you are trying to access.

3. Security: Some browsers are more secure than others, and it's important to ensure that you are using a browser that is up-to-date and has the latest security features. A "What is my browser" tool can help you determine if you need to update your browser to improve your online security.

4. Browser Extension and Add-ons: With the help of a What's my browser, you can check which browser you are using and install the browser extension and add-ons that are compatible with it.

5. Development and Testing: Web developers and testers need to check the compatibility of their websites and applications with different browsers. The "What is my browser" tool is a useful tool for them to check the compatibility of their website with different browsers.

Conclusion

In conclusion, the "What is my browser" tool is a useful tool for anyone who uses the internet. It can help you ensure that you are using a compatible browser for a specific website or web application, troubleshoot browsing issues, improve your online security by keeping your browser up-to-date, and also helps in installing compatible browser extension and add-ons. It's an easy tool to use and can be accessed via the website, browser extension, JavaScript detection, or command line. Using the tool is simple and straightforward, and it can provide valuable information to help you make the most of your browsing experience.