Saturday, July 10, 2010

Google publishes stats report about web

Google has recently published a report about the Web, which includes a lot of interesting stats. The results were obtained from a sample of 4.2 billion web pages indexed by Google.

Recently, Google has published a report about the web that has more stats that are interesting. Really, 4.2 web pages are indexed by Google to obtain the results. Usually, the average web page takes up 320 KB on the wire. Moreover, only two-thirds of the compressible material on a page is actually compressed. At the same time, in 80% of pages, 10 or more resources are loaded from a single host.

29.39 is the average number of images per page and the size of all the images from a page is 205.99 KB. A web page has an average of 7.09 external scripts and 3.22 external stylesheets. 57.98 KB is the average size of the scripts and 18.72 KB is the average number of the stylesheets.

Moreover, Google has found that only 17 million pages from sample use SSL (about 0.4%).

If you are a developer and want to improve the performance of your websites, you can have a lot of tutorials from Google. However, Google recommends to use Gzip compression, use HTTP caching, optimize JavaScript code and properly combine scripts and stylesheets.

Urs Hölzle, Google's Senior Vice President of Operation, said that the average web page takes 4.9 seconds to load and it makes 44 calls to different resources. "Speed matters. The average web page isn't just big, it's complicated. Web pages aren't just HTML. A web page is a big ensemble of things, some of which must load serially," said Urs Hölzle.