A web browser is a computer program designed to read HTML or PHP code, composing the web pages. There is a great number of web browsers nowadaus and all of them are based on different browser engines, which read HMTL and PHP code and present it as a readable page screen. Web browsers were found in the 1980s and are being constantly developed and upgraded to provide faster loading times, more stable web pages and better looking websites.

The term ''bandwith'' stands for the speed of data being transferred over the Internet from the data centers it is located in to the Internet Service Providers and to the users' Internet enabled devices.