Browser compatibility refers to how well a website or web application functions across different web browsers, such as Google Chrome, Mozilla Firefox, Safari, and Microsoft Edge. Each browser interprets web code slightly differently, which can lead to variations in how a site appears or operates. Ensuring compatibility helps provide a consistent user experience for everyone, regardless of their chosen browser. To achieve browser compatibility, developers often use standardized coding practices and test their websites on multiple browsers. Tools and frameworks, like Bootstrap or jQuery, can help streamline this process by providing pre-tested code that works well across various platforms. This ensures that users can access content without issues, regardless of their browser choice.