Web erişilebilirliği değerlendirmesine PA11Y tabanlı bir yaklaşım

In today's world, the impact of digital technologies on social life is increasing, and access to information is predominantly facilitated through digital platforms. This development necessitates that publicly available websites be accessible to all individuals. Ensuring equal digital rights for people with disabilities is not only an ethical responsibility but also a legal obligation. Website accessibility evaluation processes are generally carried out using automated testing tools. However, existing tools have significant limitations, particularly in analyzing dynamically generated content. They often produce false positives and fail to provide comprehensive assessments. In this thesis, an accessible evaluation system has been developed based on the open-source tool Pa11y, offering Turkish language support and visual feedback mechanisms. The system features a Node.js-based backend and a React.js-based frontend, enabling users to visually detect and interactively correct accessibility issues such as insufficient color contrast, missing alternative texts, and unlabelled form elements. With proxy support, the system overcomes CORS restrictions and can analyze both static and dynamic content. Furthermore, it includes features such as saving analysis history, performing comparative evaluations, and exporting reports in PDF/JSON formats. Applied tests and user feedback indicate that the system produces more accurate and consistent results compared to existing tools. In particular, it successfully analyzes dynamic content that popular tools like WAVE fail to process properly. The system's Turkish localization and visual feedback features significantly enhance user experience. This study represents a concrete contribution to improving the accessibility of digital services in Turkey and lays the groundwork for future developments in compliance with WCAG 2.2 and beyond.