Below are the seven main reasons why we should use Selenium for test automation
(1)Selenium is a free and open-source tool
(2)Selenium has a large user base and a good community support
(3)Selenium has one of the main features like cross-browser compatibility and example are Firefox, Chrome, Internet Explorer, Safari, etc.
(4)Selenium one more feature is great platform compatibility Examples are Windows, Mac OS, Linux, etc.
(5)Selenium has supported multiple programming languages like Java, C#, Ruby, Python, Perl, etc.
(6)Selenium has fresh and regular repository developments
(7)Selenium supports distributed testing.