Infoscience

Report

Some Things You Always Wanted to Know About Web Pages (But Were Too Busy to Ask)

The organic growth of the web has led to web sites that exhibit a large variety of properties. We conduct a large- scale study to gain quantitative insights into the browser-side effects of the structure and behavior of thousands of the most popular web sites. We find that 50 % of web pages load more than 100 resources from more than 17 distinct hosts and make the browser process more than 730 kB of javascript. Embedded third-party advertisements are the prevailing model on the web to monetize services or content that are otherwise provided free-of-cost to end users. We quantify the effects on browser-side resource consumption caused by advertisements and find that on pages with ads, the ads make up 20 % of all HTTP requests. Furthermore, ads lead to three times as many javascript background events that prevent the processor from staying in deep sleep mode.

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