Web browser

A web browser is a computer program or mobile application for visiting websites on the World Wide Web. Since the late 1990s, most personal computers, mobile phones and other mobile devices have supported web browsers.

Web browsers are used to browse websites on the Internet. The first web browser was created in 1990. Many web browsers are available for free. All web browsers are used for visiting websites, but some web browsers exist with certain purposes in mind. For example, some browsers focus on data security, privacy, and keeping computers safe from viruses. Other browsers focus on providing the fastest and most simple experience.

Some popular web browsers include:

 Google Chrome 
 Mozilla Firefox
 Microsoft Edge, a more modernized version of Internet Explorer, included with Windows 10 and later
 Opera
 Safari, included on all Apple devices including iPhones, iPads, and Macs. Previously, Safari could be used on Microsoft Windows. Apple no longer supports using Safari on Windows.

Discontinued web browsers:
 Internet Explorer, included with Windows 10 and earlier, which is no longer supported

 Function 
A webpage is one area of a website.  Every web page has a unique web address, which is typically entered in a text input located at the top of the browser interface. When visiting a webpage, the browser downloads the website content, usually HTML documents, style information, JavaScript for website function, and any images or video required to display the webpage. Its browser engine then reads and translates the HTML file, and renders it on-screen in a visible format.

 Other websites 
 What is browser? Video by Google
 How browsers work
 Web Browser -Citizendium