In a modern and busy life, the need for information is growing, and the web is becoming an increasingly important resource because wide availability removes barriers to communication, enables the availability of information and products with less effort and costs. The web can make life easier for disabled people in particular and make them less dependent. However, this is only possible if the websites are built according to standards that allow all users to be present. The obligation to ensure digital accessibility is regulated by a series of regulations and laws at the European Union level. The WCAG standard contains a series of guidelines and principles for creating a website in a way that ensures the digital accessibility of the website for all people, especially for people with disabilities. The thesis presents the results of testing the websites of five institutions of public administration that are important in the daily life of residents. It is assumed that citizens visit them often due to the information they provide. The Law on the accessibility of websites and software solutions for mobile devices of public sector bodies obliges them to make their websites accessible to all users. However, the test results showed that not a single page fully met the accessibility criteria. In the second part of the thesis, the process of creating a website with the assumption of accessibility, and the procedure of testing it automatically and manually, is presented.