The cache can store many items, such as large images, so they do not need to be downloaded from the server again. Most browsers use an internal cache of web page resources to improve loading times for subsequent visits to the same page. Each link contains a URL, and when it is clicked or tapped, the browser navigates to the new resource. Web pages usually contain hyperlinks to other pages and resources. If the URL uses the secure mode of HTTP (HTTPS), the connection between the browser and the web server is encrypted for the purposes of communications security and information privacy. Virtually all URLs are retrieved using the Hypertext Transfer Protocol (HTTP), a set of rules for the transfer of data. This process begins when the user inputs a Uniform Resource Locator (URL), such as, into the browser. The purpose of a web browser is to fetch content from the World Wide Web or from local storage and display it on a user's device. In some technical contexts, browsers are referred to as user agents.įunction Navigating to English Wikipedia using a web browser ( Firefox) However, to connect to a website's server and display its web pages, a user must have a web browser installed. A search engine is a website that provides links to other websites. Ī web browser is not the same thing as a search engine, though the two are often confused. The most used browser is Google Chrome, with a 65% global market share on all devices, followed by Safari with 18%. In 2020, an estimated 4.9 billion people have used a browser. Browsers are used on a range of devices, including desktops, laptops, tablets, and smartphones. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. A web browser ( Safari) displaying a web pageĪ web browser is an application for accessing websites and the Internet.
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