Cocciolo, A. (2015). The rise and fall of text on the Web: a quantitative study of Web archives. Information Research, 20(3), paper 682. Retrieved from http://InformationR.net/ir/20-3/paper682.html (Archived by WebCite® at http://www.webcitation.org/6bIKsJbMJ)

“Introduction. This study addresses the following research question: is the use of text on the World Wide Web declining? If so, when did it start declining, and by how much has it declined?
Method. Web pages are downloaded from the Internet Archive for the years 1999, 2002, 2005, 2008, 2011 and 2014, producing 600 captures of 100 prominent and popular Webpages in the United States from a variety of sectors.
Analysis. Captured Webpages were analysed to uncover if the percentage of text they present to users has declined over the past fifteen years using a computer vision algorithm, which deciphers text from non-text. The percentage of text per Webpage is computed as well as the mean percentage of text per year. A one-way ANOVA is used to uncover if the percentage of text on Webpages is reliant on the year the Website was produced.
Results. Results reveal that the percentage of text on Webpages climbed from the late 1990s to 2005 where it peaked (with 32.4% of the Webpage), and has been in decline ever since. Websites in 2014 have 5.5% less text than 2005 on average, or 26.9% text. This is more text than in the late 1990s, with Webpages having only 22.4% text.
Conclusions. This study confirms using a systematic approach what many have observed anecdotally: that the percentage of text on Webpages is decreasing.”