A Web Browser is an application program designed for receiving, sending and presenting information resource on the World Wide Web. The information resource can be a web page, image, video and other content are identified by a URL- Unified Resource Locator. By providing hyperlink in web pages, user navigate their browsers to related resources. In addition, browsers are mainly intended to use the World Wide Web and even can access data provided by web servers in private networks or files in file system.
The World Wide Web was the first web browser, invented by Sir Tim Berners-Lee in 1990 and was later renamed Nexus. In 1993, Mosaic browser was released by Marc Adreessen, which was added with more functionality and advanced one and it had became the world’s first popular browser, which made WWW system simple to use and more accessible to the average person.
A web browser supports wide variety of file formats and protocols and it is rich in user interface. It includes various components to support Usenet news, IRC, e-mail, social media network, etc. Majorly, all web browsers allows user to open multiple URL at the same time, either in different tabs of same window or in different browser window.
Privacy and Security : Most of the browser supports HTTP secure and provides option to delete cookies, web cache, and browsing history. In addition, you can block browsing untrusting sites by selecting “Block reported attack sites” option in settings.
Extensibility : A browser extension is PC application that adds the functionalities of a web browser. All major web browsers support this feature.