The 2021 Web Almanac HTTP Archive's annual state of the web report
The Web Almanac is an annual research project by the web development community to better understand how the web is built and experienced. Industry experts and a team of peer reviewers and data analysts research the state of the web, one chapter at a time, focused in areas of web page composition, user experience, content publishing, and content delivery. The result is a richly detailed report brimming with insightful analysis written by subject matter experts built on a solid foundation of statistics aggregated over millions of top websites.