Internet banking is constantly expanding in terms of content and functionality, and it has a significant impact on society. One goal of the Digital Agenda for Libya is to make Internet banking services available to all, reducing cash handling. Internet banking is a critical service that financial institutions provide to their customers in order to facilitate easier and faster access to financial services and transactions. Banks currently spend vast sums of money on the development and maintenance of websites and backend systems that provide clients with Internet banking services. Given the low accessibility of bank websites, evaluation and monitoring of the efficiency of those banking sites that offer the service are needed. The effect of moderating factors on online banking usability assessment in Libya is discussed here. As the Internet grows in popularity, banks are adopting technologies to create their own Web sites. The design of the website is an important factor in determining whether or not visitors will return to the site. Thus, the purpose of this study is to investigate the usability of the Internet banking Web sites of two main banks in Libya. The evaluation procedure is used in the World Wide Web environment to measure real data and obtain response time. To get results on the performance of a Web site, some data from the calculation of page size, composition, structure, and download time has been measured. In this study, a website performance evaluation tool, Dareboost, was used to evaluate the Bank of Commerce & Development website and Wahda Bank website. Dareboost has a- modern graphical user interface that is very easy and intuitive to use and gives a recommendations on how to improve the performance as the result. Based on the observation results, the Bank of Commerce & Development website received the highest score in most metrics. Therefore, the Bank of Commerce & Development website is the best in terms of usability.