The term “Web” refers to the World Wide Web, pages accessed through a web browser. Web accessibility is a term representing web tools, technologies and site that have been developed for the purpose of improving the user experience of people with disabilities. These difficulties can include speech, visual, auditory and even cognitive difficulties that individuals face every day and it the duty of the web programmers is to keep such individuals in mide when creating a website. When these obstacles that people with disabilities face are removed, they can be equal and independent members of society. The Web Content Accessibility Guidelines (WCAG) were developed with the goal of providing a single standard for web page accessibility. They were developed in collaboration with individuals and organizations affiliated into World Wide Web Consortium (W3C), whose task is to create standards and guidelines for web technologies worldwide. Because it is difficult to visualize the difficulties for individuals, web accessibility tools are being developed to all users. We use these technologies for checking web accessibility for the purpose od identifying and solving problems that a person with disabilities may face. In this research, we analysed three of the most famous tools for checking the accessibility of websites, WAVE, Axe and Lighthouse, and then we manually checked the accessibility of the website ourselves.