A web browser is a software application used to access and view websites on the internet. It allows users to enter a website address or URL (Uniform Resource Locator) and retrieves the website content from the internet, displaying it on the user's device in a user-friendly format. Web browsers provide features such as tabbed browsing, bookmarking and history. They support various technologies such as HTML, CSS, and JavaScript, enabling websites to display interactive and multimedia content. Popular web browsers include Google Chrome, Mozilla Firefox, Apple Safari and Microsoft Edge. Web browsers are an essential tool for accessing and navigating the internet, and they play a critical role in the user experience of websites and online applications.