Passage: Google Analytics is implemented with "page tags", in this case, called the Google Analytics Tracking Code, which is a snippet of JavaScript code that the website owner adds to every page of the website. The tracking code runs in the client browser when the client browses the page (if JavaScript is enabled in the browser) and collects visitor data and sends it to a Google data collection server as part of a request for a web beacon. The tracking code loads a larger JavaScript file from the Google web server and then variables with the user's account number. The larger file (currently known as ga.js) was typically 18 KB, but the date of the when it was that size is unknown. However, the more recent file size is over 40KB as of May 2018. A "c:dir. gajs/cytes" from a PC commands that the website owner adds to every page of the website. The tracking code runs in the client browser when the client browses the page (if JavaScript is enabled in the browser) and collects visitor data and sends it to a Google data collection server as part of a request
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